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releases.html
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<!DOCTYPE html>
<html data-content_root="./" lang="en">
<head>
<meta charset="utf-8"/>
<meta content="width=device-width, initial-scale=1.0" name="viewport"/><meta content="width=device-width, initial-scale=1" name="viewport"/>
<title>Releases — Datashader v0.16.3</title>
<script data-cfasync="false">
document.documentElement.dataset.mode = localStorage.getItem("mode") || "";
document.documentElement.dataset.theme = localStorage.getItem("theme") || "";
</script>
<!-- Loaded before other Sphinx assets -->
<link href="_static/styles/theme.css?digest=dfe6caa3a7d634c4db9b" rel="stylesheet"/>
<link href="_static/styles/bootstrap.css?digest=dfe6caa3a7d634c4db9b" rel="stylesheet"/>
<link href="_static/styles/pydata-sphinx-theme.css?digest=dfe6caa3a7d634c4db9b" rel="stylesheet"/>
<link href="_static/vendor/fontawesome/6.5.2/css/all.min.css?digest=dfe6caa3a7d634c4db9b" rel="stylesheet"/>
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<link href="_static/graphviz.css?v=fd3f3429" rel="stylesheet" type="text/css"/>
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<script src="_static/design-tabs.js?v=f930bc37"></script>
<script>
window.goatcounter = {
path: function(p) { return location.host + p }
}
</script>
<script async="async" data-goatcounter="https://holoviz.goatcounter.com/count" src="_static/js/goatcounter.js?v=f53f84b8"></script>
<script>
window.goatcounter = {
path: function(p) { return location.host + p }
}
</script>
<script>DOCUMENTATION_OPTIONS.pagename = 'releases';</script>
<link href="_static/favicon.ico" rel="icon"/>
<link href="about.html" rel="author" title="About these documents"/>
<link href="genindex.html" rel="index" title="Index"/>
<link href="search.html" rel="search" title="Search"/>
<link href="api.html" rel="next" title="API"/>
<link href="topics/index.html" rel="prev" title="Topics"/>
<meta content="width=device-width, initial-scale=1" name="viewport"/>
<meta content="en" name="docsearch:language"/>
<meta content="2024-08-01" name="docbuild:last-update"/>
</head>
<body data-bs-root-margin="0px 0px -60%" data-bs-spy="scroll" data-bs-target=".bd-toc-nav" data-default-mode="" data-offset="180">
<div class="skip-link d-print-none" id="pst-skip-link"><a href="#main-content">Skip to main content</a></div>
<div id="pst-scroll-pixel-helper"></div>
<button class="btn rounded-pill" id="pst-back-to-top" type="button">
<i class="fa-solid fa-arrow-up"></i>Back to top</button>
<input class="sidebar-toggle" id="pst-primary-sidebar-checkbox" type="checkbox"/>
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<div class="search-button__wrapper">
<div class="search-button__overlay"></div>
<div class="search-button__search-container">
<form action="search.html" class="bd-search d-flex align-items-center" method="get">
<i class="fa-solid fa-magnifying-glass"></i>
<input aria-label="Search the docs ..." autocapitalize="off" autocomplete="off" autocorrect="off" class="form-control" id="search-input" name="q" placeholder="Search the docs ..." spellcheck="false" type="search"/>
<span class="search-button__kbd-shortcut"><kbd class="kbd-shortcut__modifier">Ctrl</kbd>+<kbd>K</kbd></span>
</form></div>
</div>
<div class="pst-async-banner-revealer d-none">
<aside aria-label="Version warning" class="d-none d-print-none" id="bd-header-version-warning"></aside>
</div>
<header class="bd-header navbar navbar-expand-lg bd-navbar d-print-none">
<div class="bd-header__inner bd-page-width">
<button aria-label="Site navigation" class="pst-navbar-icon sidebar-toggle primary-toggle">
<span class="fa-solid fa-bars"></span>
</button>
<div class="col-lg-3 navbar-header-items__start">
<div class="navbar-item">
<a class="navbar-brand logo" href="index.html">
<img alt="Datashader v0.16.3 - Home" class="logo__image only-light" src="_static/logo_horizontal.svg"/>
<script>document.write(`<img src="_static/logo_horizontal.svg" class="logo__image only-dark" alt="Datashader v0.16.3 - Home"/>`);</script>
</a></div>
</div>
<div class="col-lg-9 navbar-header-items">
<div class="me-auto navbar-header-items__center">
<div class="navbar-item">
<nav>
<ul class="bd-navbar-elements navbar-nav">
<li class="nav-item">
<a class="nav-link nav-internal" href="index.html">
Introduction
</a>
</li>
<li class="nav-item">
<a class="nav-link nav-internal" href="getting_started/index.html">
Getting Started
</a>
</li>
<li class="nav-item">
<a class="nav-link nav-internal" href="user_guide/index.html">
User Guide
</a>
</li>
<li class="nav-item">
<a class="nav-link nav-internal" href="topics/index.html">
Topics
</a>
</li>
<li class="nav-item current active">
<a class="nav-link nav-internal" href="#">
Releases
</a>
</li>
<li class="nav-item dropdown">
<button aria-controls="pst-nav-more-links" aria-expanded="false" class="btn dropdown-toggle nav-item" data-bs-toggle="dropdown" type="button">
More
</button>
<ul class="dropdown-menu" id="pst-nav-more-links">
<li class="">
<a class="nav-link dropdown-item nav-internal" href="api.html">
API
</a>
</li>
<li class="">
<a class="nav-link dropdown-item nav-internal" href="FAQ.html">
FAQ
</a>
</li>
<li class="">
<a class="nav-link dropdown-item nav-internal" href="about.html">
About
</a>
</li>
</ul>
</li>
</ul>
</nav></div>
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<script>
document.write(`
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<span class="search-button__kbd-shortcut"><kbd class="kbd-shortcut__modifier">Ctrl</kbd>+<kbd class="kbd-shortcut__modifier">K</kbd></span>
</button>
`);
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`);
</script></div>
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<a class="nav-link pst-navbar-icon" data-bs-placement="bottom" data-bs-toggle="tooltip" href="https://github.com/holoviz/datashader" rel="noopener" target="_blank" title="GitHub"><i aria-hidden="true" class="fa-brands fa-square-github fa-lg"></i>
<span class="sr-only">GitHub</span></a>
</li>
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<a class="nav-link pst-navbar-icon" data-bs-placement="bottom" data-bs-toggle="tooltip" href="https://twitter.com/datashader" rel="noopener" target="_blank" title="Twitter"><i aria-hidden="true" class="fa-brands fa-twitter-square fa-lg"></i>
<span class="sr-only">Twitter</span></a>
</li>
<li class="nav-item">
<a class="nav-link pst-navbar-icon" data-bs-placement="bottom" data-bs-toggle="tooltip" href="https://discourse.holoviz.org/c/datashader/" rel="noopener" target="_blank" title="Discourse"><i aria-hidden="true" class="fa-brands fa-discourse fa-lg"></i>
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</li>
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<a class="nav-link pst-navbar-icon" data-bs-placement="bottom" data-bs-toggle="tooltip" href="https://discord.gg/AXRHnJU6sP" rel="noopener" target="_blank" title="Discord"><i aria-hidden="true" class="fa-brands fa-discord fa-lg"></i>
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<nav>
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<li class="nav-item">
<a class="nav-link nav-internal" href="index.html">
Introduction
</a>
</li>
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<a class="nav-link nav-internal" href="getting_started/index.html">
Getting Started
</a>
</li>
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User Guide
</a>
</li>
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<a class="nav-link nav-internal" href="topics/index.html">
Topics
</a>
</li>
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<a class="nav-link nav-internal" href="#">
Releases
</a>
</li>
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API
</a>
</li>
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FAQ
</a>
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About
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<h1>Releases<a class="headerlink" href="#releases" title="Link to this heading">#</a></h1>
<section id="version-0-16-3-2024-07-04">
<h2>Version 0.16.3 (2024-07-04)<a class="headerlink" href="#version-0-16-3-2024-07-04" title="Link to this heading">#</a></h2>
<p>This release adds an enhancement and compatibility changes with upstream libraries. Thanks to <a class="reference external" href="https://github.com/raphaelquast">@raphaelquast</a>, <a class="reference external" href="https://github.com/droumis">@droumis</a> and <a class="reference external" href="https://github.com/hoxbro">@hoxbro</a>.</p>
<p>Enhancements:</p>
<ul class="simple">
<li><p>Add fail-fast for datasets outside the visible extent (<a class="reference external" href="https://github.com/holoviz/datashader/pull/1345">#1345</a>)</p></li>
</ul>
<p>Compatibility:</p>
<ul class="simple">
<li><p>Compatibility with cudf 2024.06 (<a class="reference external" href="https://github.com/holoviz/datashader/pull/1344">#1344</a>)</p></li>
<li><p>Compatibility with geopandas 1.0 and dask-geopandas 0.4.0 (<a class="reference external" href="https://github.com/holoviz/datashader/pull/1347">#1347</a>)</p></li>
</ul>
<p>Maintenance:</p>
<ul class="simple">
<li><p>Update docs.yaml (<a class="reference external" href="https://github.com/holoviz/datashader/pull/1346">#1346</a>)</p></li>
</ul>
</section>
<section id="version-0-16-2-2024-05-31">
<h2>Version 0.16.2 (2024-05-31)<a class="headerlink" href="#version-0-16-2-2024-05-31" title="Link to this heading">#</a></h2>
<p>This release adds compatibility with Numpy 2.0, along with other improvements and bugfixes. Thanks to <a class="reference external" href="https://github.com/hoxbro">@hoxbro</a> for his contributions.</p>
<p>Bugfixes:</p>
<ul class="simple">
<li><p>Remove artifact from Polygon rendering (<a class="reference external" href="https://github.com/holoviz/datashader/pull/1329">#1329</a>)</p></li>
</ul>
<p>Compatibility:</p>
<ul class="simple">
<li><p>Test dev releases of <code class="docutils literal notranslate"><span class="pre">numpy</span></code> 2.0 and <code class="docutils literal notranslate"><span class="pre">numba</span></code> 0.60.0 (<a class="reference external" href="https://github.com/holoviz/datashader/pull/1332">#1332</a>)</p></li>
<li><p>Improve compatibility with <code class="docutils literal notranslate"><span class="pre">dask-expr</span></code> (<a class="reference external" href="https://github.com/holoviz/datashader/pull/1335">#1335</a>)</p></li>
<li><p>Add gpu marker for test and test both classic and <code class="docutils literal notranslate"><span class="pre">dask-expr</span></code> <code class="docutils literal notranslate"><span class="pre">Dask.DataFrame</span></code>’s (<a class="reference external" href="https://github.com/holoviz/datashader/pull/1341">#1341</a>)</p></li>
</ul>
<p>Documentation:</p>
<ul class="simple">
<li><p>Update links (<a class="reference external" href="https://github.com/holoviz/datashader/pull/1337">#1337</a>, <a class="reference external" href="https://github.com/holoviz/datashader/pull/1339">#1339</a>)</p></li>
<li><p>Update readme badges (<a class="reference external" href="https://github.com/holoviz/datashader/pull/1334">#1334</a>)</p></li>
<li><p>Add download data script (<a class="reference external" href="https://github.com/holoviz/datashader/pull/1326">#1326</a>)</p></li>
</ul>
<p>Maintenance:</p>
<ul class="simple">
<li><p>Update list of maintainers (<a class="reference external" href="https://github.com/holoviz/datashader/pull/1336">#1336</a>)</p></li>
<li><p>Parallelize the test suite and fix a test polluted bug (<a class="reference external" href="https://github.com/holoviz/datashader/pull/1338">#1338</a>)</p></li>
<li><p>Update test workflow (<a class="reference external" href="https://github.com/holoviz/datashader/pull/1340">#1340</a>)</p></li>
</ul>
</section>
<section id="version-0-16-1-2024-04-19">
<h2>Version 0.16.1 (2024-04-19)<a class="headerlink" href="#version-0-16-1-2024-04-19" title="Link to this heading">#</a></h2>
<p>This release brings compatibility with new release of upstream packages. Thanks to first-time contributor <a class="reference external" href="https://github.com/alexander-beedie">@alexander-beedie</a>, and the regular contributors <a class="reference external" href="https://github.com/philippjfr">@philippjfr</a>, <a class="reference external" href="https://github.com/ianthomas23">@ianthomas23</a>, <a class="reference external" href="https://github.com/maximlt">@maximlt</a>, and <a class="reference external" href="https://github.com/hoxbro">@hoxbro</a>.</p>
<p>Enhancements:</p>
<ul class="simple">
<li><p>Improved antialiased mean reduction (<a class="reference external" href="https://github.com/holoviz/datashader/pull/1300">#1300</a>)</p></li>
<li><p>Update the docstring of <code class="docutils literal notranslate"><span class="pre">eq_hist</span></code> (<a class="reference external" href="https://github.com/holoviz/datashader/pull/1322">#1322</a>)</p></li>
</ul>
<p>Compatibility:</p>
<ul class="simple">
<li><p>Python 3.12 support (<a class="reference external" href="https://github.com/holoviz/datashader/pull/1317">#1317</a>)</p></li>
<li><p>Basic <code class="docutils literal notranslate"><span class="pre">dask_expr</span></code> support (<a class="reference external" href="https://github.com/holoviz/datashader/pull/1317">#1317</a>)</p></li>
<li><p>Numpy 2.0 support (<a class="reference external" href="https://github.com/holoviz/datashader/pull/1306">#1306</a>)</p></li>
<li><p>Remove redundant py2 helper code (<a class="reference external" href="https://github.com/holoviz/datashader/pull/1316">#1316</a>)</p></li>
</ul>
<p>Maintenance:</p>
<ul class="simple">
<li><p>Replace Google Analytics with GoatCounter (<a class="reference external" href="https://github.com/holoviz/datashader/pull/1309">#1309</a>)</p></li>
<li><p>Docs: ignore numpydoc validation checks (<a class="reference external" href="https://github.com/holoviz/datashader/pull/1310">#1310</a>)</p></li>
<li><p>Fix test suite (<a class="reference external" href="https://github.com/holoviz/datashader/pull/1314">#1314</a>)</p></li>
<li><p>General maintenance (<a class="reference external" href="https://github.com/holoviz/datashader/pull/1320">#1320</a>)</p></li>
</ul>
</section>
<section id="version-0-16-0-2023-10-26">
<h2>Version 0.16.0 (2023-10-26)<a class="headerlink" href="#version-0-16-0-2023-10-26" title="Link to this heading">#</a></h2>
<p>Datashader 0.16.0 is a significant release adding support for rendering GeoPandas GeoDataFrames directly rather than having to convert them to SpatialPandas first. Support for GeoPandas geometry types in Datashader <code class="docutils literal notranslate"><span class="pre">Canvas</span></code> functions is as follows:</p>
<ul class="simple">
<li><p><code class="docutils literal notranslate"><span class="pre">Canvas.line</span></code>: <code class="docutils literal notranslate"><span class="pre">LineString</span></code>, <code class="docutils literal notranslate"><span class="pre">MultiLineString</span></code>, <code class="docutils literal notranslate"><span class="pre">MultiPolygon</span></code>, <code class="docutils literal notranslate"><span class="pre">Polygon</span></code></p></li>
<li><p><code class="docutils literal notranslate"><span class="pre">Canvas.point</span></code>: <code class="docutils literal notranslate"><span class="pre">MultiPoint</span></code>, <code class="docutils literal notranslate"><span class="pre">Point</span></code></p></li>
<li><p><code class="docutils literal notranslate"><span class="pre">Canvas.polygons</span></code>: <code class="docutils literal notranslate"><span class="pre">MultiPolygon</span></code>, <code class="docutils literal notranslate"><span class="pre">Polygon</span></code></p></li>
</ul>
<p>There is also support in <code class="docutils literal notranslate"><span class="pre">Canvas.line</span></code> for a new data type which is a 2D <code class="docutils literal notranslate"><span class="pre">xarray.DataArray</span></code> (within an <code class="docutils literal notranslate"><span class="pre">xarray.Dataset</span></code>) containing the coordinates of multiple lines that share the same <code class="docutils literal notranslate"><span class="pre">x</span></code> coordinates.</p>
<p>The DataShape package is now vendored in Datashader as it has not been maintained for a number of years and is not accepting updates.</p>
<p>Thanks to new contributor <a class="reference external" href="https://github.com/J08ny">@J08ny</a> and regular contributors <a class="reference external" href="https://github.com/Hoxbro">@Hoxbro</a> and <a class="reference external" href="https://github.com/ianthomas23">@ianthomas23</a>.</p>
<p>Enhancements:</p>
<ul class="simple">
<li><p>Support rendering of GeoPandas GeoDataFrames as lines, points and polygons (<a class="reference external" href="https://github.com/holoviz/datashader/pull/1285">#1285</a>, <a class="reference external" href="https://github.com/holoviz/datashader/pull/1293">#1293</a>, <a class="reference external" href="https://github.com/holoviz/datashader/pull/1297">#1297</a>)</p></li>
<li><p>Implement lines using 2D xarray with common x coordinates (<a class="reference external" href="https://github.com/holoviz/datashader/pull/1282">#1282</a>)</p></li>
</ul>
<p>General code improvements:</p>
<ul class="simple">
<li><p>Add debug logging to compiler module (<a class="reference external" href="https://github.com/holoviz/datashader/pull/1280">#1280</a>)</p></li>
<li><p>Vendor DataShape (<a class="reference external" href="https://github.com/holoviz/datashader/pull/1284">#1284</a>)</p></li>
<li><p>Don’t use <code class="docutils literal notranslate"><span class="pre">object</span></code> as base class (<a class="reference external" href="https://github.com/holoviz/datashader/pull/1286">#1286</a>)</p></li>
<li><p>Fix typos using <code class="docutils literal notranslate"><span class="pre">codespell</span></code> (<a class="reference external" href="https://github.com/holoviz/datashader/pull/1288">#1288</a>)</p></li>
<li><p>Fix <code class="docutils literal notranslate"><span class="pre">float16</span></code> being a floating type. (<a class="reference external" href="https://github.com/holoviz/datashader/pull/1290">#1290</a>)</p></li>
<li><p>Simplify line <code class="docutils literal notranslate"><span class="pre">_internal_build_extend</span></code> (<a class="reference external" href="https://github.com/holoviz/datashader/pull/1294">#1294</a>)</p></li>
</ul>
<p>Improvements to CI:</p>
<ul class="simple">
<li><p>Update to latest <code class="docutils literal notranslate"><span class="pre">holoviz_tasks</span></code> (<a class="reference external" href="https://github.com/holoviz/datashader/pull/1281">#1281</a>)</p></li>
<li><p>Update <code class="docutils literal notranslate"><span class="pre">codecov</span></code> configuration (<a class="reference external" href="https://github.com/holoviz/datashader/pull/1292">#1292</a>)</p></li>
<li><p>Add <code class="docutils literal notranslate"><span class="pre">pre-commit</span></code> (<a class="reference external" href="https://github.com/holoviz/datashader/pull/1295">#1295</a>, <a class="reference external" href="https://github.com/holoviz/datashader/pull/1296">#1296</a>)</p></li>
</ul>
<p>Compatibility:</p>
<ul class="simple">
<li><p>Support Pandas 2.1 (<a class="reference external" href="https://github.com/holoviz/datashader/pull/1276">#1276</a>, <a class="reference external" href="https://github.com/holoviz/datashader/pull/1287">#1287</a>)</p></li>
<li><p>Replace <code class="docutils literal notranslate"><span class="pre">np.NaN</span></code> with <code class="docutils literal notranslate"><span class="pre">np.nan</span></code> (<a class="reference external" href="https://github.com/holoviz/datashader/pull/1289">#1289</a>)</p></li>
<li><p>Drop support for Python 3.8 (<a class="reference external" href="https://github.com/holoviz/datashader/pull/1291">#1291</a>)</p></li>
</ul>
</section>
<section id="version-0-15-2-2023-08-17">
<h2>Version 0.15.2 (2023-08-17)<a class="headerlink" href="#version-0-15-2-2023-08-17" title="Link to this heading">#</a></h2>
<p>This release adds antialiased line support for inspection reductions such as <code class="docutils literal notranslate"><span class="pre">max_n</span></code> and <code class="docutils literal notranslate"><span class="pre">where</span></code>, including within categorical <code class="docutils literal notranslate"><span class="pre">by</span></code> reductions. It also improves support for <code class="docutils literal notranslate"><span class="pre">summary</span></code> reductions and adds CUDA implementations of <code class="docutils literal notranslate"><span class="pre">std</span></code> and <code class="docutils literal notranslate"><span class="pre">var</span></code> reductions.</p>
<p>Thanks to regular contributors <a class="reference external" href="https://github.com/Hoxbro">@Hoxbro</a>, <a class="reference external" href="https://github.com/ianthomas23">@ianthomas23</a>, <a class="reference external" href="https://github.com/maximlt">@maximlt</a> and <a class="reference external" href="https://github.com/thuydotm">@thuydotm</a>.</p>
<p>Enhancements:</p>
<ul class="simple">
<li><p>Antialiasing line support for inspection reductions:</p>
<ul>
<li><p>Pre-compile antialias stage 2 combination (<a class="reference external" href="https://github.com/holoviz/datashader/pull/1258">#1258</a>)</p></li>
<li><p>Antialiased min and max row index reductions (<a class="reference external" href="https://github.com/holoviz/datashader/pull/1259">#1259</a>)</p></li>
<li><p>CPU <code class="docutils literal notranslate"><span class="pre">shift_and_insert</span></code> function (<a class="reference external" href="https://github.com/holoviz/datashader/pull/1260">#1260</a>)</p></li>
<li><p>Refactor of CUDA <code class="docutils literal notranslate"><span class="pre">*_n</span></code> reductions (<a class="reference external" href="https://github.com/holoviz/datashader/pull/1261">#1261</a>)</p></li>
<li><p>Support antialiased lines in <code class="docutils literal notranslate"><span class="pre">*_n</span></code> reductions (<a class="reference external" href="https://github.com/holoviz/datashader/pull/1262">#1262</a>)</p></li>
<li><p>Replace accumulate with copy on first call to antialiased stage 2 combine (<a class="reference external" href="https://github.com/holoviz/datashader/pull/1264">#1264</a>)</p></li>
<li><p>Separate where <code class="docutils literal notranslate"><span class="pre">combine_cpu</span></code> functions by ndim (<a class="reference external" href="https://github.com/holoviz/datashader/pull/1265">#1265</a>)</p></li>
<li><p>Antialiased line support for <code class="docutils literal notranslate"><span class="pre">where</span></code> reductions (<a class="reference external" href="https://github.com/holoviz/datashader/pull/1269">#1269</a>)</p></li>
</ul>
</li>
<li><p>Improved support for <code class="docutils literal notranslate"><span class="pre">summary</span></code> reductions:</p>
<ul>
<li><p>Support <code class="docutils literal notranslate"><span class="pre">by</span></code> reduction within <code class="docutils literal notranslate"><span class="pre">summary</span></code> reduction (<a class="reference external" href="https://github.com/holoviz/datashader/pull/1254">#1254</a>)</p></li>
<li><p>Support <code class="docutils literal notranslate"><span class="pre">summary</span></code> containing <code class="docutils literal notranslate"><span class="pre">by</span></code> reduction with other reductions (<a class="reference external" href="https://github.com/holoviz/datashader/pull/1257">#1257</a>)</p></li>
<li><p>Support <code class="docutils literal notranslate"><span class="pre">summary</span></code> containing multiple <code class="docutils literal notranslate"><span class="pre">where</span></code> with the same selector (<a class="reference external" href="https://github.com/holoviz/datashader/pull/1271">#1271</a>)</p></li>
</ul>
</li>
<li><p>CUDA support for <code class="docutils literal notranslate"><span class="pre">std</span></code> and <code class="docutils literal notranslate"><span class="pre">var</span></code> reductions (<a class="reference external" href="https://github.com/holoviz/datashader/pull/1267">#1267</a>)</p></li>
</ul>
<p>General code improvements:</p>
<ul class="simple">
<li><p>Remove pyarrow pin (<a class="reference external" href="https://github.com/holoviz/datashader/pull/1248">#1248</a>)</p></li>
</ul>
<p>Improvements to CI:</p>
<ul class="simple">
<li><p>Update <code class="docutils literal notranslate"><span class="pre">holoviz_tasks</span></code> to v0.1a15 (<a class="reference external" href="https://github.com/holoviz/datashader/pull/1251">#1251</a>)</p></li>
<li><p>Use <code class="docutils literal notranslate"><span class="pre">holoviz_tasks/install</span></code> action for docs (<a class="reference external" href="https://github.com/holoviz/datashader/pull/1272">#1272</a>)</p></li>
</ul>
<p>Improvements to documentation:</p>
<ul class="simple">
<li><p>Update readme to include Python 3.11 (<a class="reference external" href="https://github.com/holoviz/datashader/pull/1249">#1249</a>)</p></li>
<li><p>Correct links to pandas docs (<a class="reference external" href="https://github.com/holoviz/datashader/pull/1250">#1250</a>)</p></li>
<li><p>Remove twitter from index page (<a class="reference external" href="https://github.com/holoviz/datashader/pull/1253">#1253</a>)</p></li>
<li><p>Create FUNDING.yml (<a class="reference external" href="https://github.com/holoviz/datashader/pull/1263">#1263</a>)</p></li>
</ul>
</section>
<section id="version-0-15-1-2023-07-05">
<h2>Version 0.15.1 (2023-07-05)<a class="headerlink" href="#version-0-15-1-2023-07-05" title="Link to this heading">#</a></h2>
<p>This release contains an important bug fix to ensure that categorical column order in maintained across dask partitions. It also adds support for categorical inspection reductions such as <code class="docutils literal notranslate"><span class="pre">by(max_n)</span></code>. The only missing functionality for inspection reductions is now antialiased lines, which in planned for the next release.</p>
<p>Thanks to contributors <a class="reference external" href="https://github.com/ianthomas23">@ianthomas23</a>, <a class="reference external" href="https://github.com/maximlt">@maximlt</a> and <a class="reference external" href="https://github.com/philippjfr">@philippjfr</a>.</p>
<p>Bug fixes:</p>
<ul class="simple">
<li><p>Fix single category reductions (<a class="reference external" href="https://github.com/holoviz/datashader/pull/1231">#1231</a>)</p></li>
<li><p>Ensure categorical column order is the same across dask partitions (<a class="reference external" href="https://github.com/holoviz/datashader/pull/1239">#1239</a>)</p></li>
</ul>
<p>Enhancements:</p>
<ul class="simple">
<li><p>Categorical inspection reductions:</p>
<ul>
<li><p>Support <code class="docutils literal notranslate"><span class="pre">by(max_n)</span></code> and <code class="docutils literal notranslate"><span class="pre">by(min_n)</span></code> (<a class="reference external" href="https://github.com/holoviz/datashader/pull/1229">#1229</a>)</p></li>
<li><p>Categorical <code class="docutils literal notranslate"><span class="pre">max_row_index</span></code>, <code class="docutils literal notranslate"><span class="pre">max_n_row_index</span></code> and <code class="docutils literal notranslate"><span class="pre">min</span></code> equivalents (<a class="reference external" href="https://github.com/holoviz/datashader/pull/1233">#1233</a>)</p></li>
<li><p>Use enum for row index column rather than <code class="docutils literal notranslate"><span class="pre">None</span></code> (<a class="reference external" href="https://github.com/holoviz/datashader/pull/1234">#1234</a>)</p></li>
<li><p>Add support for categorical <code class="docutils literal notranslate"><span class="pre">where</span></code> reductions (<a class="reference external" href="https://github.com/holoviz/datashader/pull/1237">#1237</a>)</p></li>
<li><p>Add tests for handling of NaNs in <code class="docutils literal notranslate"><span class="pre">where</span></code> reductions (<a class="reference external" href="https://github.com/holoviz/datashader/pull/1241">#1241</a>)</p></li>
</ul>
</li>
<li><p>General code improvements:</p>
<ul>
<li><p>Only check <code class="docutils literal notranslate"><span class="pre">dask.DataFrame</span></code> <code class="docutils literal notranslate"><span class="pre">dtypes</span></code> of columns actually used (<a class="reference external" href="https://github.com/holoviz/datashader/pull/1236">#1236</a>)</p></li>
<li><p>Remove all use of <code class="docutils literal notranslate"><span class="pre">OrderedDict</span></code> (<a class="reference external" href="https://github.com/holoviz/datashader/pull/1242">#1242</a>)</p></li>
<li><p>Separate out 3d and 4d combine functions (<a class="reference external" href="https://github.com/holoviz/datashader/pull/1243">#1243</a>)</p></li>
<li><p>Reorganise antialiasing code (<a class="reference external" href="https://github.com/holoviz/datashader/pull/1245">#1245</a>)</p></li>
</ul>
</li>
</ul>
<p>Improvements to CI:</p>
<ul class="simple">
<li><p>Bump holoviz tasks (<a class="reference external" href="https://github.com/holoviz/datashader/pull/1240">#1240</a>)</p></li>
<li><p>Add image is close test helper (<a class="reference external" href="https://github.com/holoviz/datashader/pull/1244">#1244</a>)</p></li>
</ul>
<p>Improvements to documentation:</p>
<ul class="simple">
<li><p>Update to Google Analytics 4 (<a class="reference external" href="https://github.com/holoviz/datashader/pull/1228">#1228</a>)</p></li>
<li><p>Rename pyviz-dev as holoviz-dev (<a class="reference external" href="https://github.com/holoviz/datashader/pull/1232">#1232</a>)</p></li>
</ul>
</section>
<section id="version-0-15-0-2023-05-30">
<h2>Version 0.15.0 (2023-05-30)<a class="headerlink" href="#version-0-15-0-2023-05-30" title="Link to this heading">#</a></h2>
<p>This release provides significant improvements for inspection reductions by adding new <code class="docutils literal notranslate"><span class="pre">first_n</span></code>, <code class="docutils literal notranslate"><span class="pre">last_n</span></code>, <code class="docutils literal notranslate"><span class="pre">max_n</span></code> and <code class="docutils literal notranslate"><span class="pre">min_n</span></code> reductions, and providing Dask and CUDA support for all existing and new inspection reductions including <code class="docutils literal notranslate"><span class="pre">where</span></code>. It also provides support for Numba 0.57, NumPy 1.24 and Python 3.11, and drops support for Python 3.7.</p>
<p>Thanks to first-time contributors <a class="reference external" href="https://github.com/danigm">@danigm</a> and <a class="reference external" href="https://github.com/Jap8nted">@Jap8nted</a>, and also regulars <a class="reference external" href="https://github.com/Hoxbro">@Hoxbro</a>, <a class="reference external" href="https://github.com/philippjfr">@philippjfr</a> and <a class="reference external" href="https://github.com/ianthomas23">@ianthomas23</a></p>
<p>Enhancements:</p>
<ul class="simple">
<li><p>Inspection reductions:</p>
<ul>
<li><p>Reduction append functions return index not boolean (<a class="reference external" href="https://github.com/holoviz/datashader/pull/1180">#1180</a>)</p></li>
<li><p><code class="docutils literal notranslate"><span class="pre">first_n</span></code>, <code class="docutils literal notranslate"><span class="pre">last_n</span></code>, <code class="docutils literal notranslate"><span class="pre">max_n</span></code> and <code class="docutils literal notranslate"><span class="pre">min_n</span></code> reductions (<a class="reference external" href="https://github.com/holoviz/datashader/pull/1184">#1184</a>)</p></li>
<li><p>Add <code class="docutils literal notranslate"><span class="pre">cuda</span></code> argument to <code class="docutils literal notranslate"><span class="pre">_build_combine</span></code> (<a class="reference external" href="https://github.com/holoviz/datashader/pull/1194">#1194</a>)</p></li>
<li><p>Support <code class="docutils literal notranslate"><span class="pre">max_n</span></code> and <code class="docutils literal notranslate"><span class="pre">min_n</span></code> reductions on GPU (<a class="reference external" href="https://github.com/holoviz/datashader/pull/1196">#1196</a>)</p></li>
<li><p>Use fast cuda mutex available in numba 0.57 (<a class="reference external" href="https://github.com/holoviz/datashader/pull/1212">#1212</a>)</p></li>
<li><p>Dask support for <code class="docutils literal notranslate"><span class="pre">first</span></code>, <code class="docutils literal notranslate"><span class="pre">last</span></code>, <code class="docutils literal notranslate"><span class="pre">first_n</span></code> and <code class="docutils literal notranslate"><span class="pre">last_n</span></code> reductions (<a class="reference external" href="https://github.com/holoviz/datashader/pull/1214">#1214</a>)</p></li>
<li><p>Wrap use of cuda mutex in <code class="docutils literal notranslate"><span class="pre">where</span></code> reductions (<a class="reference external" href="https://github.com/holoviz/datashader/pull/1217">#1217</a>)</p></li>
<li><p>Cuda and cuda-with-dask support for inspection reductions (<a class="reference external" href="https://github.com/holoviz/datashader/pull/1219">#1219</a>)</p></li>
</ul>
</li>
<li><p>x and y range attributes on returned aggregations (<a class="reference external" href="https://github.com/holoviz/datashader/pull/1198">#1198</a>)</p></li>
<li><p>Make <code class="docutils literal notranslate"><span class="pre">datashader.composite</span></code> imports lazy for faster import time (<a class="reference external" href="https://github.com/holoviz/datashader/pull/1222">#1222</a>)</p></li>
<li><p>Improvements to CI:</p>
<ul>
<li><p>Cancel concurrent test workflows (<a class="reference external" href="https://github.com/holoviz/datashader/pull/1208">#1208</a>)</p></li>
</ul>
</li>
<li><p>Improvements to documentation:</p>
<ul>
<li><p>Inspection reduction documentation (<a class="reference external" href="https://github.com/holoviz/datashader/pull/1186">#1186</a>, <a class="reference external" href="https://github.com/holoviz/datashader/pull/1190">#1190</a>)</p></li>
<li><p>Upgrade to latest nbsite and pydata-sphinx-theme (<a class="reference external" href="https://github.com/holoviz/datashader/pull/1221">#1221</a>)</p></li>
<li><p>Use geodatasets in example data</p></li>
</ul>
</li>
</ul>
<p>Bug fixes:</p>
<ul class="simple">
<li><p>Fix conversion from <code class="docutils literal notranslate"><span class="pre">cupy</span></code> in categorical <code class="docutils literal notranslate"><span class="pre">rescale_discrete_levels</span></code> (<a class="reference external" href="https://github.com/holoviz/datashader/pull/1179">#1179</a>)</p></li>
<li><p>Validate canvas <code class="docutils literal notranslate"><span class="pre">width</span></code>, <code class="docutils literal notranslate"><span class="pre">height</span></code> (<a class="reference external" href="https://github.com/holoviz/datashader/pull/1183">#1183</a>)</p></li>
<li><p>Support antialiasing in pipeline API (<a class="reference external" href="https://github.com/holoviz/datashader/pull/1213">#1213</a>)</p></li>
</ul>
<p>Compatibility:</p>
<ul class="simple">
<li><p>NumPy 1.24 compatibility (<a class="reference external" href="https://github.com/holoviz/datashader/pull/1176">#1176</a>, <a class="reference external" href="https://github.com/holoviz/datashader/pull/1185">#1185</a>, <a class="reference external" href="https://github.com/holoviz/datashader/pull/1218">#1218</a>)</p></li>
<li><p>Numba 0.57 compatibility (<a class="reference external" href="https://github.com/holoviz/datashader/pull/1205">#1205</a>)</p></li>
</ul>
</section>
<section id="version-0-14-4-2023-02-02">
<h2>Version 0.14.4 (2023-02-02)<a class="headerlink" href="#version-0-14-4-2023-02-02" title="Link to this heading">#</a></h2>
<p>This release adds a new <code class="docutils literal notranslate"><span class="pre">where</span></code> reduction that provides improved inspection capabilities and adds support for colormaps that are tuples of hex values. There are also various bug fixes and compatibility improvements.</p>
<p>Thanks to <a class="reference external" href="https://github.com/ianthomas23">@ianthomas23</a>, <a class="reference external" href="https://github.com/maximlt">@maximlt</a> and <a class="reference external" href="https://github.com/Hoxbro">@Hoxbro</a>.</p>
<p>Enhancements:</p>
<ul class="simple">
<li><p>New <code class="docutils literal notranslate"><span class="pre">where</span></code> reduction to provide improved inspection functionality:</p>
<ul>
<li><p>Add new where reduction (<a class="reference external" href="https://github.com/holoviz/datashader/pull/1155">#1155</a>)</p></li>
<li><p>Where reduction using dataframe row index (<a class="reference external" href="https://github.com/holoviz/datashader/pull/1164">#1164</a>)</p></li>
<li><p>CUDA support for where reduction (<a class="reference external" href="https://github.com/holoviz/datashader/pull/1167">#1167</a>)</p></li>
<li><p>User guide page for where reduction (<a class="reference external" href="https://github.com/holoviz/datashader/pull/1172">#1172</a>)</p></li>
</ul>
</li>
<li><p>Support colormaps that are tuples of hex values (<a class="reference external" href="https://github.com/holoviz/datashader/pull/1173">#1173</a>)</p></li>
<li><p>Add governance docs (<a class="reference external" href="https://github.com/holoviz/datashader/pull/1165">#1165</a>)</p></li>
<li><p>Improve documentation build system (<a class="reference external" href="https://github.com/holoviz/datashader/pull/1170">#1170</a>, <a class="reference external" href="https://github.com/holoviz/datashader/pull/1171">#1171</a>)</p></li>
<li><p>Improvements to CI:</p>
<ul>
<li><p>Rename default branch from <code class="docutils literal notranslate"><span class="pre">master</span></code> to <code class="docutils literal notranslate"><span class="pre">main</span></code> (<a class="reference external" href="https://github.com/holoviz/datashader/pull/1156">#1156</a>)</p></li>
<li><p>Use holoviz_task install action (<a class="reference external" href="https://github.com/holoviz/datashader/pull/1163">#1163</a>)</p></li>
</ul>
</li>
</ul>
<p>Bug fixes:</p>
<ul class="simple">
<li><p>Validate calculated log canvas range (<a class="reference external" href="https://github.com/holoviz/datashader/pull/1154">#1154</a>)</p></li>
<li><p>Better validate <code class="docutils literal notranslate"><span class="pre">canvas.line()</span></code> coordinate lengths (<a class="reference external" href="https://github.com/holoviz/datashader/pull/1160">#1160</a>)</p></li>
<li><p>Return early in <code class="docutils literal notranslate"><span class="pre">eq_hist()</span></code> if all data masked out (<a class="reference external" href="https://github.com/holoviz/datashader/pull/1168">#1168</a>)</p></li>
</ul>
<p>Compatibility:</p>
<ul class="simple">
<li><p>Follow recommended <code class="docutils literal notranslate"><span class="pre">numba</span></code> best practice.</p>
<ul>
<li><p>Ensure cuda functions are correctly jitted (<a class="reference external" href="https://github.com/holoviz/datashader/pull/1153">#1153</a>)</p></li>
<li><p><code class="docutils literal notranslate"><span class="pre">nopython=True</span></code> everywhere (<a class="reference external" href="https://github.com/holoviz/datashader/pull/1162">#1162</a>)</p></li>
</ul>
</li>
<li><p>Update dependencies:</p>
<ul>
<li><p>Pip <code class="docutils literal notranslate"><span class="pre">pyarrow</span></code> in tests dependencies (<a class="reference external" href="https://github.com/holoviz/datashader/pull/1174">#1174</a>)</p></li>
</ul>
</li>
</ul>
</section>
<section id="version-0-14-3-2022-11-17">
<h2>Version 0.14.3 (2022-11-17)<a class="headerlink" href="#version-0-14-3-2022-11-17" title="Link to this heading">#</a></h2>
<p>This release fixes a bug related to spatial indexing of <code class="docutils literal notranslate"><span class="pre">spatialpandas.GeoDataFrames</span></code>, and introduces enhancements to antialiased lines, benchmarking and GPU support.</p>
<p>Thanks to first-time contributors <a class="reference external" href="https://github.com/eriknw">@eriknw</a> and <a class="reference external" href="https://github.com/raybellwaves">@raybellwaves</a>, and also <a class="reference external" href="https://github.com/ianthomas23">@ianthomas23</a> and <a class="reference external" href="https://github.com/maximlt">@maximlt</a>.</p>
<p>Enhancements:</p>
<ul class="simple">
<li><p>Improvements to antialiased lines:</p>
<ul>
<li><p>Fit antialiased line code within usual numba/dask framework (<a class="reference external" href="https://github.com/holoviz/datashader/pull/1142">#1142</a>)</p></li>
<li><p>Refactor stage 2 aggregation for antialiased lines (<a class="reference external" href="https://github.com/holoviz/datashader/pull/1145">#1145</a>)</p></li>
<li><p>Support compound reductions for antialiased lines on the CPU (<a class="reference external" href="https://github.com/holoviz/datashader/pull/1146">#1146</a>)</p></li>
</ul>
</li>
<li><p>New benchmark framework:</p>
<ul>
<li><p>Add benchmarking framework using <code class="docutils literal notranslate"><span class="pre">asv</span></code> (<a class="reference external" href="https://github.com/holoviz/datashader/pull/1120">#1120</a>)</p></li>
<li><p>Add <code class="docutils literal notranslate"><span class="pre">cudf</span></code>, <code class="docutils literal notranslate"><span class="pre">dask</span></code> and <code class="docutils literal notranslate"><span class="pre">dask-cudf</span></code> <code class="docutils literal notranslate"><span class="pre">Canvas.line</span></code> benchmarks (<a class="reference external" href="https://github.com/holoviz/datashader/pull/1140">#1140</a>)</p></li>
</ul>
</li>
<li><p>Improvements to GPU support:</p>
<ul>
<li><p>Cupy implementation of eq_hist (<a class="reference external" href="https://github.com/holoviz/datashader/pull/1129">#1129</a>)</p></li>
</ul>
</li>
<li><p>Improvements to documentation:</p>
<ul>
<li><p>Fix markdown syntax for link (<a class="reference external" href="https://github.com/holoviz/datashader/pull/1119">#1119</a>)</p></li>
<li><p>DOC: add text link to <a class="reference external" href="https://examples.pyviz.org/datashader_dashboard">https://examples.pyviz.org/datashader_dashboard</a> (<a class="reference external" href="https://github.com/holoviz/datashader/pull/1123">#1123</a>)</p></li>
</ul>
</li>
<li><p>Improvements to dependency management (<a class="reference external" href="https://github.com/holoviz/datashader/pull/1111">#1111</a>, <a class="reference external" href="https://github.com/holoviz/datashader/pull/1116">#1116</a>)</p></li>
<li><p>Improvements to CI (<a class="reference external" href="https://github.com/holoviz/datashader/pull/1132">#1132</a>, <a class="reference external" href="https://github.com/holoviz/datashader/pull/1135">#1135</a>, <a class="reference external" href="https://github.com/holoviz/datashader/pull/1136">#1136</a>, <a class="reference external" href="https://github.com/holoviz/datashader/pull/1137">#1137</a>, <a class="reference external" href="https://github.com/holoviz/datashader/pull/1143">#1143</a>)</p></li>
</ul>
<p>Bug fixes:</p>
<ul class="simple">
<li><p>Ensure spatial index <code class="docutils literal notranslate"><span class="pre">_sindex</span></code> is retained on dataframe copy (<a class="reference external" href="https://github.com/holoviz/datashader/pull/1122">#1122</a>)</p></li>
</ul>
</section>
<section id="version-0-14-2-2022-08-10">
<h2>Version 0.14.2 (2022-08-10)<a class="headerlink" href="#version-0-14-2-2022-08-10" title="Link to this heading">#</a></h2>
<p>This is a bug fix release to fix an important divide by zero bug in antialiased lines, along with improvements to documentation and handling of dependencies.</p>
<p>Thanks to <a class="reference external" href="https://github.com/ianthomas23">@ianthomas23</a> and <a class="reference external" href="https://github.com/adamjhawley">@adamjhawley</a>.</p>
<p>Enhancements:</p>
<ul class="simple">
<li><p>Improvements to documentation:</p>
<ul>
<li><p>Fix links in docs when viewed in browser (<a class="reference external" href="https://github.com/holoviz/datashader/pull/1102">#1102</a>)</p></li>
<li><p>Add release notes (<a class="reference external" href="https://github.com/holoviz/datashader/pull/1108">#1108</a>)</p></li>
</ul>
</li>
<li><p>Improvements to handling of dependencies:</p>
<ul>
<li><p>Correct dask and bokeh dependencies (<a class="reference external" href="https://github.com/holoviz/datashader/pull/1104">#1104</a>)</p></li>
<li><p>Add requests as an install dependency (<a class="reference external" href="https://github.com/holoviz/datashader/pull/1105">#1105</a>)</p></li>
<li><p>Better handle returned dask npartitions in tests (<a class="reference external" href="https://github.com/holoviz/datashader/pull/1107">#1107</a>)</p></li>
</ul>
</li>
</ul>
<p>Bug fixes:</p>
<ul class="simple">
<li><p>Fix antialiased line divide by zero bug (<a class="reference external" href="https://github.com/holoviz/datashader/pull/1099">#1099</a>)</p></li>
</ul>
</section>
<section id="version-0-14-1-2022-06-21">
<h2>Version 0.14.1 (2022-06-21)<a class="headerlink" href="#version-0-14-1-2022-06-21" title="Link to this heading">#</a></h2>
<p>This release provides a number of important bug fixes and small enhancements from Ian Thomas along with infrastructure improvements from Maxime Liquet and new reductions from <a class="reference external" href="https://github.com/tselea">@tselea</a>.</p>
<p>Enhancements:</p>
<ul class="simple">
<li><p>Improvements to <a class="reference external" href="https://datashader.org/user_guide/Timeseries.html#antialiasing">antialiased lines</a>:</p>
<ul>
<li><p>Support antialiased lines for categorical aggregates (<a class="reference external" href="https://github.com/holoviz/datashader/pull/1081">#1081</a>, <a class="reference external" href="https://github.com/holoviz/datashader/pull/1083">#1083</a>)</p></li>
<li><p>Correctly handle NaNs in antialiased line coordinates (<a class="reference external" href="https://github.com/holoviz/datashader/pull/1097">#1097</a>)</p></li>
</ul>
</li>
<li><p>Improvements to <code class="docutils literal notranslate"><span class="pre">rescale_discrete_levels</span></code> for <code class="docutils literal notranslate"><span class="pre">how='eq_hist'</span></code>:</p>
<ul>
<li><p>Correct implementation of <code class="docutils literal notranslate"><span class="pre">rescale_discrete_levels</span></code> (<a class="reference external" href="https://github.com/holoviz/datashader/pull/1078">#1078</a>)</p></li>
<li><p>Check before calling <code class="docutils literal notranslate"><span class="pre">rescale_discrete_levels</span></code> (<a class="reference external" href="https://github.com/holoviz/datashader/pull/1085">#1085</a>)</p></li>
<li><p>Remove empty histogram bins in <code class="docutils literal notranslate"><span class="pre">eq_hist</span></code> (<a class="reference external" href="https://github.com/holoviz/datashader/pull/1094">#1094</a>)</p></li>
</ul>
</li>
<li><p>Implementation of first and last reduction (<a class="reference external" href="https://github.com/holoviz/datashader/pull/1093">#1093</a>) for data types other than raster.</p></li>
</ul>
<p>Bug fixes:</p>
<ul class="simple">
<li><p>Do not snap trimesh vertices to pixel grid (<a class="reference external" href="https://github.com/holoviz/datashader/pull/1092">#1092</a>)</p></li>
<li><p>Correctly orient (y, x) arrays for xarray (<a class="reference external" href="https://github.com/holoviz/datashader/pull/1095">#1095</a>)</p></li>
<li><p>Infrastructure/build fixes (<a class="reference external" href="https://github.com/holoviz/datashader/pull/1080">#1080</a>, <a class="reference external" href="https://github.com/holoviz/datashader/pull/1089">#1089</a>, <a class="reference external" href="https://github.com/holoviz/datashader/pull/1096">#1096</a>)</p></li>
</ul>
</section>
<section id="version-0-14-0-2022-04-25">
<h2>Version 0.14.0 (2022-04-25)<a class="headerlink" href="#version-0-14-0-2022-04-25" title="Link to this heading">#</a></h2>
<p>This release has been nearly a year in the making, with major new contributions from Ian Thomas, Thuy Do Thi Minh, Simon Høxbro Hansen, Maxime Liquet, and James Bednar, and additional support from Andrii Oriekhov, Philipp Rudiger, and Ajay Thorve.</p>
<p>Enhancements:</p>
<ul class="simple">
<li><p>Full support for <a class="reference external" href="https://datashader.org/user_guide/Timeseries.html#antialiasing">antialiased lines</a> of specified width (<a class="reference external" href="https://github.com/holoviz/datashader/pull/1048">#1048</a>, <a class="reference external" href="https://github.com/holoviz/datashader/pull/1072">#1072</a>). Previous antialiasing support was limited to single-pixel lines and certain floating-point reduction functions. Now supports arbitrary widths and arbitrary reduction functions, making antialiasing fully supported. Performance ranges from 1.3x to 14x slower than the simplest zero-width implementation; see <a class="reference external" href="https://github.com/holoviz/datashader/pull/1072">benchmarks</a>.</p></li>
<li><p>Fixed an issue with visibility on zoomed-in points plots and on overlapping line plots that was first reported in 2017, with a new option <code class="docutils literal notranslate"><span class="pre">rescale_discrete_levels</span></code> for <code class="docutils literal notranslate"><span class="pre">how='eq_hist'</span></code> (<a class="reference external" href="https://github.com/holoviz/datashader/pull/1055">#1055</a>)</p></li>
<li><p>Added a <a class="reference external" href="https://datashader.org/getting_started/Pipeline.html#colormapping-2d-categorical-data">categorical color_key for 2D</a> (unstacked) aggregates (<a class="reference external" href="https://github.com/holoviz/datashader/pull/1020">#1020</a>), for producing plots where each pixel has at most one category value</p></li>
<li><p>Improved docs:</p>
<ul>
<li><p>A brand new <a class="reference external" href="https://datashader.org/user_guide/Polygons.html">polygons guide</a> (<a class="reference external" href="https://github.com/holoviz/datashader/pull/1071">#1071</a>)</p></li>
<li><p>A new guide to <a class="reference external" href="https://datashader.org/getting_started/Pipeline.html#id1">3D aggregations</a> using <code class="docutils literal notranslate"><span class="pre">by</span></code> now documenting using <code class="docutils literal notranslate"><span class="pre">categorizer</span></code> objects to do 3D numerical binning (<a class="reference external" href="https://github.com/holoviz/datashader/pull/1071">#1071</a>)</p></li>
<li><p>Moved documentation for <a class="reference external" href="https://datashader.org/getting_started/Pipeline.html#spreading">spreading</a> to its own section so it can be presented at the right pipeline stage (was mixed up with colormapping before) (<a class="reference external" href="https://github.com/holoviz/datashader/pull/1071">#1071</a>)</p></li>
<li><p>Added <a class="reference external" href="https://datashader.org/getting_started/Pipeline.html#transforming-data-values-for-colormapping">rescale_discrete_levels example</a> (<a class="reference external" href="https://github.com/holoviz/datashader/pull/1071">#1071</a>)</p></li>
<li><p>Other misc doc cleanup (<a class="reference external" href="https://github.com/holoviz/datashader/pull/1035">#1035</a>, <a class="reference external" href="https://github.com/holoviz/datashader/pull/1037">#1037</a>, <a class="reference external" href="https://github.com/holoviz/datashader/pull/1058">#1058</a>, <a class="reference external" href="https://github.com/holoviz/datashader/pull/1074">#1074</a>, <a class="reference external" href="https://github.com/holoviz/datashader/pull/1077">#1077</a>)</p></li>
</ul>
</li>
</ul>
<p>Bugfixes:</p>
<ul class="simple">
<li><p>Fixed details of the raster coordinate calculations to match other primitives, making it simpler to overlay separately rendered results (<a class="reference external" href="https://github.com/holoviz/datashader/pull/959">#959</a>, <a class="reference external" href="https://github.com/holoviz/datashader/pull/1046">#1046</a>)</p></li>
<li><p>Various fixes and extensions for cupy/CUDA, e.g. to use cuda for category_binning, spread, and dynspread, including cupy.interp where appropriate (<a class="reference external" href="https://github.com/holoviz/datashader/pull/1015">#1015</a>, <a class="reference external" href="https://github.com/holoviz/datashader/pull/1016">#1016</a>, <a class="reference external" href="https://github.com/holoviz/datashader/pull/1044">#1044</a>, <a class="reference external" href="https://github.com/holoviz/datashader/pull/1050">#1050</a>, <a class="reference external" href="https://github.com/holoviz/datashader/pull/1060">#1060</a>)</p></li>
<li><p>Infrastructure/build/ecosystem fixes (<a class="reference external" href="https://github.com/holoviz/datashader/pull/1022">#1022</a>, <a class="reference external" href="https://github.com/holoviz/datashader/pull/1025">#1025</a>, <a class="reference external" href="https://github.com/holoviz/datashader/pull/1027">#1027</a>, <a class="reference external" href="https://github.com/holoviz/datashader/pull/1036">#1036</a>, <a class="reference external" href="https://github.com/holoviz/datashader/pull/1045">#1045</a>, <a class="reference external" href="https://github.com/holoviz/datashader/pull/1049">#1049</a>, <a class="reference external" href="https://github.com/holoviz/datashader/pull/1050">#1050</a>, <a class="reference external" href="https://github.com/holoviz/datashader/pull/1057">#1057</a>, <a class="reference external" href="https://github.com/holoviz/datashader/pull/1061">#1061</a>, <a class="reference external" href="https://github.com/holoviz/datashader/pull/1062">#1062</a>, <a class="reference external" href="https://github.com/holoviz/datashader/pull/1063">#1063</a>, <a class="reference external" href="https://github.com/holoviz/datashader/pull/1064">#1064</a>)</p></li>
</ul>
<p>Compatibility:</p>
<ul class="simple">
<li><p><code class="docutils literal notranslate"><span class="pre">Canvas.line()</span></code> option <code class="docutils literal notranslate"><span class="pre">antialias=True</span></code> is now deprecated; use <code class="docutils literal notranslate"><span class="pre">line_width=1</span></code> (or another nonzero value) instead. (<a class="reference external" href="https://github.com/holoviz/datashader/pull/1048">#1048</a>)</p></li>
<li><p>Removed long-deprecated <code class="docutils literal notranslate"><span class="pre">bokeh_ext.py</span></code> (<a class="reference external" href="https://github.com/holoviz/datashader/pull/1059">#1059</a>)</p></li>
<li><p>Dropped support for Python 2.7 (actually already dropped from the tests in Datashader 0.12) and 3.6 (no longer supported by many downstream libraries like rioxarray, but several of them are not properly declaring that restriction, making 3.6 much more difficult to support.) (<a class="reference external" href="https://github.com/holoviz/datashader/pull/1033">#1033</a>)</p></li>
<li><p>Now tested on Python 3.7, 3.8, 3.9, and 3.10. (<a class="reference external" href="https://github.com/holoviz/datashader/pull/1033">#1033</a>)</p></li>
</ul>
</section>
<section id="version-0-13-0-2021-06-10">
<h2>Version 0.13.0 (2021-06-10)<a class="headerlink" href="#version-0-13-0-2021-06-10" title="Link to this heading">#</a></h2>
<p>Thanks to Jim Bednar, Nezar Abdennur, Philipp Rudiger, and Jean-Luc Stevens.</p>
<p>Enhancements:</p>
<ul class="simple">
<li><p>Defined new <code class="docutils literal notranslate"><span class="pre">dynspread</span> <span class="pre">metric</span></code> based on counting the fraction of non-empty pixels that have non-empty pixels within a given radius. The resulting <code class="docutils literal notranslate"><span class="pre">dynspread</span></code> behavior is much more intuitive than the old behavior, which counted already-spread pixels as if they were neighbors (<a class="reference external" href="https://github.com/holoviz/datashader/pull/1001">#1001</a>)</p></li>
<li><p>Added <code class="docutils literal notranslate"><span class="pre">ds.count()</span></code> as the default reduction for <code class="docutils literal notranslate"><span class="pre">ds.by</span></code> (<a class="reference external" href="https://github.com/holoviz/datashader/pull/1004">#1004</a>)</p></li>
</ul>
<p>Bugfixes:</p>
<ul class="simple">
<li><p>Fixed array-bounds reading error in <code class="docutils literal notranslate"><span class="pre">dynspread</span></code> (<a class="reference external" href="https://github.com/holoviz/datashader/pull/1001">#1001</a>)</p></li>
<li><p>Fix <code class="docutils literal notranslate"><span class="pre">color_key</span></code> argument for <code class="docutils literal notranslate"><span class="pre">dsshow</span></code> (<a class="reference external" href="https://github.com/holoviz/datashader/pull/986">#986</a>)</p></li>
<li><p>Added Matplotlib output to the 3_Interactivity getting started page. (<a class="reference external" href="https://github.com/holoviz/datashader/pull/1009">#1009</a>)</p></li>
<li><p>Misc docs fixes (<a class="reference external" href="https://github.com/holoviz/datashader/pull/1007">#1007</a>)</p></li>
<li><p>Fix nan assignment to integer array in RaggedArray (<a class="reference external" href="https://github.com/holoviz/datashader/pull/1008">#1008</a>)</p></li>
</ul>
<p>Compatibility:</p>
<ul class="simple">
<li><p>Any usage of <code class="docutils literal notranslate"><span class="pre">dynspread</span></code> with datatypes other than points should be replaced with <code class="docutils literal notranslate"><span class="pre">spread()</span></code>, which will do what was probably intended by the original <code class="docutils literal notranslate"><span class="pre">dynspread</span></code> call, i.e. to make isolated lines and shapes visible. Strictly speaking, dynspread could still be useful for other glyph types if that glyph is contained entirely in a pixel, e.g. if a polygon or line segment is located within the pixel bounds, but that seems unlikely.</p></li>
<li><p>Dynspread may need to have the threshold or max_px arguments updated to achieve the same spreading as in previous releases, though the new behavior is normally going to be more useful than the old.</p></li>
</ul>
</section>
<section id="version-0-12-1-2021-03-22">
<h2>Version 0.12.1 (2021-03-22)<a class="headerlink" href="#version-0-12-1-2021-03-22" title="Link to this heading">#</a></h2>
<p>Major release with new features that should really be considered part of the upcoming 0.13 release; please treat all the new features as experimental in this release due to it being officially a minor release (unintentionally).</p>
<p>Massive thanks to these contributors for substantial new functionality:</p>
<ul class="simple">
<li><p>Nezar Abdennur (nvictus), Trevor Manz, and Thomas Caswell for their contributions to the new <code class="docutils literal notranslate"><span class="pre">dsshow()</span></code> support for using Datashader as a Matplotlib Artist, providing seamless interactive Matplotlib+Datashader plots.</p></li>
<li><p>Oleg Smirnov for <code class="docutils literal notranslate"><span class="pre">category_modulo</span></code> and <code class="docutils literal notranslate"><span class="pre">category_binning</span></code> for <code class="docutils literal notranslate"><span class="pre">by()</span></code>, making categorical plots vastly more powerful.</p></li>
<li><p>Jean-Luc Stevens for <code class="docutils literal notranslate"><span class="pre">spread</span></code> and <code class="docutils literal notranslate"><span class="pre">dynspread</span></code> support for numerical aggregate arrays and not just RGB images, allowing isolated datapoints to be made visible while still supporting hover, colorbars, and other plot features that depend on the numeric aggregate values.</p></li>
<li><p>Valentin Haenel for the initial anti-aliased line drawing support (still experimental).</p></li>
</ul>
<p>Thanks to Jim Bednar, Philipp Rudiger, Peter Roelants, Thuy Do Thi Minh, Chris Ball, and Jean-Luc Stevens for maintenance and other contributions.</p>
<p>New features:</p>
<ul class="simple">
<li><p>Expanded (and transposed) performance guide table (<a class="reference external" href="https://github.com/holoviz/datashader/pull/961">#961</a>)</p></li>
<li><p>Add <code class="docutils literal notranslate"><span class="pre">category_modulo</span></code> and <code class="docutils literal notranslate"><span class="pre">category_binning</span></code> for grouping numerical values into categories using by() (<a class="reference external" href="https://github.com/holoviz/datashader/pull/927">#927</a>)</p></li>
<li><p>Support spreading for numerical (non-RGB) aggregate arrays (<a class="reference external" href="https://github.com/holoviz/datashader/pull/771">#771</a>, <a class="reference external" href="https://github.com/holoviz/datashader/pull/954">#954</a>)</p></li>
<li><p>Xiaolin Wu anti-aliased line drawing, enabled by adding <code class="docutils literal notranslate"><span class="pre">antialias=True</span></code> to the <code class="docutils literal notranslate"><span class="pre">Canvas.line()</span></code> method call. Experimental; currently restricted to <code class="docutils literal notranslate"><span class="pre">sum</span></code> and <code class="docutils literal notranslate"><span class="pre">max</span></code> reductions ant only supporting a single-pixel line width. (<a class="reference external" href="https://github.com/holoviz/datashader/pull/916">#916</a>)</p></li>
<li><p>Improve Dask performance issue using a tree reduction (<a class="reference external" href="https://github.com/holoviz/datashader/pull/926">#926</a>)</p></li>
</ul>
<p>Bugfixes:</p>
<ul class="simple">
<li><p>Fix for xarray 0.17 raster files, supporting various nodata conventions (<a class="reference external" href="https://github.com/holoviz/datashader/pull/991">#991</a>)</p></li>
<li><p>Fix RaggedArray tests to keep up with Pandas test suite changes (<a class="reference external" href="https://github.com/holoviz/datashader/pull/982">#982</a>, <a class="reference external" href="https://github.com/holoviz/datashader/pull/993">#993</a>)</p></li>
<li><p>Fix out-of-bounds error on Points aggregation (<a class="reference external" href="https://github.com/holoviz/datashader/pull/981">#981</a>)</p></li>
<li><p>Fix CUDA issues (<a class="reference external" href="https://github.com/holoviz/datashader/pull/973">#973</a>)</p></li>
<li><p>Fix Xarray handling (<a class="reference external" href="https://github.com/holoviz/datashader/pull/971">#971</a>)</p></li>
<li><p>Disable the interactivity warning on the homepage (<a class="reference external" href="https://github.com/holoviz/datashader/pull/983">#983</a>)</p></li>
</ul>
<p>Compatibility:</p>
<ul class="simple">
<li><p>Drop deprecated modules <code class="docutils literal notranslate"><span class="pre">ds.geo</span></code> (moved to <code class="docutils literal notranslate"><span class="pre">xarray_image</span></code>) and <code class="docutils literal notranslate"><span class="pre">ds.spatial</span></code> (moved to <code class="docutils literal notranslate"><span class="pre">SpatialPandas</span></code>) (<a class="reference external" href="https://github.com/holoviz/datashader/pull/955">#955</a>)</p></li>
</ul>
</section>
<section id="version-0-12-0-2021-01-07">
<h2>Version 0.12.0 (2021-01-07)<a class="headerlink" href="#version-0-12-0-2021-01-07" title="Link to this heading">#</a></h2>
<p>No release notes produced.</p>
</section>
<section id="version-0-11-1-2020-08-16">
<h2>Version 0.11.1 (2020-08-16)<a class="headerlink" href="#version-0-11-1-2020-08-16" title="Link to this heading">#</a></h2>
<p>This release is primarily a compatibility release for newer versions of Rapids cuDF and Numba versions along with a small number of bug fixes. With contributions from <a class="reference external" href="https://github.com/jonmmease">@jonmmease</a>, <a class="reference external" href="https://github.com/stuartarchibald">@stuartarchibald</a>, <a class="reference external" href="https://github.com/AjayThorve">@AjayThorve</a>, <a class="reference external" href="https://github.com/kebowen730">@kebowen730</a>, <a class="reference external" href="https://github.com/jbednar">@jbednar</a> and <a class="reference external" href="https://github.com/philippjfr">@philippjfr</a>.</p>
<ul class="simple">
<li><p>Fixes support for cuDF 0.13 and Numba 0.48 (<a class="reference external" href="https://github.com/holoviz/datashader/pull/933">#933</a>)</p></li>
<li><p>Fixes for cuDF support on Numba>=0.51 (<a class="reference external" href="https://github.com/holoviz/datashader/pull/934">#934</a>, <a class="reference external" href="https://github.com/holoviz/datashader/pull/947">#947</a>)</p></li>
<li><p>Fixes tile generation using aggregators with output of boolean dtype (<a class="reference external" href="https://github.com/holoviz/datashader/pull/949">#949</a>)</p></li>
<li><p>Fixes for CI and build infrastructure (<a class="reference external" href="https://github.com/holoviz/datashader/pull/935">#935</a>, <a class="reference external" href="https://github.com/holoviz/datashader/pull/948">#948</a>, <a class="reference external" href="https://github.com/holoviz/datashader/pull/951">#951</a>)</p></li>
<li><p>Updates to docstrings (b1349e3, <a class="reference external" href="https://github.com/holoviz/datashader/pull/950">#950</a>)</p></li>
</ul>
</section>
<section id="version-0-11-0-2020-05-25">
<h2>Version 0.11.0 (2020-05-25)<a class="headerlink" href="#version-0-11-0-2020-05-25" title="Link to this heading">#</a></h2>
<p>This release includes major contributions from <a class="reference external" href="https://github.com/maihde">@maihde</a> (generalizing <code class="docutils literal notranslate"><span class="pre">count_cat</span></code> to <code class="docutils literal notranslate"><span class="pre">by</span></code> span for colorize), <a class="reference external" href="https://github.com/jonmmease">@jonmmease</a> (Dask quadmesh support), <a class="reference external" href="https://github.com/philippjfr">@philippjfr</a> and <a class="reference external" href="https://github.com/jbednar">@jbednar</a> (count_cat/by/colorize/docs/bugfixes), and Barry Bragg, Jr. (TMS tileset speedups).</p>
<p>New features (see <code class="docutils literal notranslate"><span class="pre">getting_started/2_Pipeline.ipynb</span></code> for examples):</p>
<ul class="simple">
<li><p>New <code class="docutils literal notranslate"><span class="pre">by()</span></code> categorical aggregator, extending <code class="docutils literal notranslate"><span class="pre">count_cat</span></code> to work with other reduction functions, no longer just <code class="docutils literal notranslate"><span class="pre">count</span></code>. Allows binning of aggregates separately per category value, so that you can compare how that aggregate is affected by category value. (<a class="reference external" href="https://github.com/holoviz/datashader/pull/875">#875</a>, <a class="reference external" href="https://github.com/holoviz/datashader/pull/902">#902</a>, <a class="reference external" href="https://github.com/holoviz/datashader/pull/904">#904</a>, <a class="reference external" href="https://github.com/holoviz/datashader/pull/906">#906</a>). See example in the <a class="reference external" href="http://dev.holoviews.org/user_guide/Large_Data.html#Multidimensional-plots">holoviews docs</a>.</p></li>
<li><p>Support for negative and zero values in <code class="docutils literal notranslate"><span class="pre">tf.shade</span></code> for categorical aggregates. (<a class="reference external" href="https://github.com/holoviz/datashader/pull/896">#896</a>, <a class="reference external" href="https://github.com/holoviz/datashader/pull/909">#909</a>, <a class="reference external" href="https://github.com/holoviz/datashader/pull/910">#910</a>, <a class="reference external" href="https://github.com/holoviz/datashader/pull/908">#908</a>)</p></li>
<li><p>Support for <code class="docutils literal notranslate"><span class="pre">span</span></code> in _colorize(). (<a class="reference external" href="https://github.com/holoviz/datashader/pull/875">#875</a>, <a class="reference external" href="https://github.com/holoviz/datashader/pull/910">#910</a>)</p></li>
<li><p>Support for Dask-based quadmesh rendering for rectilinear and curvilinear mesh types (<a class="reference external" href="https://github.com/holoviz/datashader/pull/885">#885</a>, <a class="reference external" href="https://github.com/holoviz/datashader/pull/913">#913</a>)</p></li>
<li><p>Support for GPU-based raster mesh rendering via <code class="docutils literal notranslate"><span class="pre">Canvas.quadmesh</span></code> (<a class="reference external" href="https://github.com/holoviz/datashader/pull/872">#872</a>)</p></li>
<li><p>Faster TMS tileset generation (<a class="reference external" href="https://github.com/holoviz/datashader/pull/886">#886</a>)</p></li>
<li><p>Expanded performance guide (<a class="reference external" href="https://github.com/holoviz/datashader/pull/868">#868</a>)</p></li>
</ul>
<p>Bugfixes:</p>
<ul class="simple">
<li><p>Misc bugfixes and improvements (<a class="reference external" href="https://github.com/holoviz/datashader/pull/874">#874</a>, <a class="reference external" href="https://github.com/holoviz/datashader/pull/882">#882</a>, <a class="reference external" href="https://github.com/holoviz/datashader/pull/888">#888</a>, <a class="reference external" href="https://github.com/holoviz/datashader/pull/889">#889</a>, <a class="reference external" href="https://github.com/holoviz/datashader/pull/890">#890</a>, <a class="reference external" href="https://github.com/holoviz/datashader/pull/891">#891</a>)</p></li>
</ul>
<p>Compatibility (breaking changes and deprecations):</p>
<ul class="simple">
<li><p>To allow negative-valued aggregates, count_cat now weights categories according to how far they are from the minimum aggregate value observed, while previously they were referenced to zero. Previous behavior can be restored by passing <code class="docutils literal notranslate"><span class="pre">color_baseline=0</span></code> to <code class="docutils literal notranslate"><span class="pre">count_cat</span></code> or <code class="docutils literal notranslate"><span class="pre">by</span></code></p></li>
<li><p><code class="docutils literal notranslate"><span class="pre">count_cat</span></code> is now deprecated and removed from the docs; use <code class="docutils literal notranslate"><span class="pre">by(...,</span> <span class="pre">count())</span></code> instead.</p></li>
<li><p>Result of a <code class="docutils literal notranslate"><span class="pre">count()</span></code> aggregation is now <code class="docutils literal notranslate"><span class="pre">uint32</span></code> not <code class="docutils literal notranslate"><span class="pre">int32</span></code> to distinguish counts from other aggregation types (<a class="reference external" href="https://github.com/holoviz/datashader/pull/910">#910</a>).</p></li>
<li><p>tf.shade now only treats zero values as missing for <code class="docutils literal notranslate"><span class="pre">count</span></code> aggregates (<code class="docutils literal notranslate"><span class="pre">uint</span></code>; zero is otherwise a valid value distinct from NaN (<a class="reference external" href="https://github.com/holoviz/datashader/pull/910">#910</a>).</p></li>
<li><p><code class="docutils literal notranslate"><span class="pre">alpha</span></code> is now respected as the upper end of the alpha range for both _colorize() and _interpolate() in tf.shade; previously only _interpolate respected it.</p></li>
<li><p>Added new nansum_missing utility for working with Numpy>1.9, where nansum no longer returns NaN for all-NaN values.</p></li>
<li><p>ds.geo and ds.spatial modules are now deprecated; their contents have moved to xarray_spatial and spatialpandas, respectively. (<a class="reference external" href="https://github.com/holoviz/datashader/pull/894">#894</a>)</p></li>
</ul>
<p>Download and install: <a class="reference external" href="https://datashader.org/getting_started">https://datashader.org/getting_started</a></p>
</section>
<section id="version-0-10-0-2020-01-21">
<h2>Version 0.10.0 (2020-01-21)<a class="headerlink" href="#version-0-10-0-2020-01-21" title="Link to this heading">#</a></h2>
<p>This release includes major contributions from <a class="reference external" href="https://github.com/jonmmease">@jonmmease</a> (polygon rendering, spatialpandas), along with contributions from <a class="reference external" href="https://github.com/philippjfr">@philippjfr</a> and <a class="reference external" href="https://github.com/brendancol">@brendancol</a> (bugfixes), and <a class="reference external" href="https://github.com/jbednar">@jbednar</a> (docs, warnings, and import times).</p>
<p>New features:</p>
<ul class="simple">
<li><p>Polygon (and points and lines) rendering for spatialpandas extension arrays (<a class="reference external" href="https://github.com/holoviz/datashader/pull/826">#826</a>, <a class="reference external" href="https://github.com/holoviz/datashader/pull/853">#853</a>)</p></li>
<li><p>Quadmesh GPU support (<a class="reference external" href="https://github.com/holoviz/datashader/pull/861">#861</a>)</p></li>
<li><p>Much faster import times (<a class="reference external" href="https://github.com/holoviz/datashader/pull/863">#863</a>)</p></li>
<li><p>New table in docs listing glyphs supported for each data library (<a class="reference external" href="https://github.com/holoviz/datashader/pull/864">#864</a>, <a class="reference external" href="https://github.com/holoviz/datashader/pull/867">#867</a>)</p></li>
<li><p>Support for remote Parquet filesystems (<a class="reference external" href="https://github.com/holoviz/datashader/pull/818">#818</a>, <a class="reference external" href="https://github.com/holoviz/datashader/pull/866">#866</a>)</p></li>
</ul>
<p>Bugfixes and compatibility:</p>
<ul class="simple">
<li><p>Misc bugfixes and improvements (<a class="reference external" href="https://github.com/holoviz/datashader/pull/844">#844</a>, <a class="reference external" href="https://github.com/holoviz/datashader/pull/860">#860</a>, <a class="reference external" href="https://github.com/holoviz/datashader/pull/866">#866</a>)</p></li>
<li><p>Fix warnings and deprecations in tests (<a class="reference external" href="https://github.com/holoviz/datashader/pull/859">#859</a>)</p></li>
<li><p>Fix Canvas.raster (padding, mode buffers, etc. <a class="reference external" href="https://github.com/holoviz/datashader/pull/862">#862</a>)</p></li>
</ul>
<p>Download and install: <a class="reference external" href="https://datashader.org/getting_started">https://datashader.org/getting_started</a></p>
</section>
<section id="version-0-9-0-2019-12-08">
<h2>Version 0.9.0 (2019-12-08)<a class="headerlink" href="#version-0-9-0-2019-12-08" title="Link to this heading">#</a></h2>
<p>This release includes major contributions from <a class="reference external" href="https://github.com/jonmmease">@jonmmease</a> (GPU support), along with contributions from <a class="reference external" href="https://github.com/brendancol">@brendancol</a> (viewshed speedups), <a class="reference external" href="https://github.com/jbednar">@jbednar</a> (docs), and <a class="reference external" href="https://github.com/jsignell">@jsignell</a> (examples, maintenance, website).</p>
<p>New features:</p>
<ul class="simple">
<li><p>Support for CUDA GPU dataframes (cudf and dask_cudf) (<a class="reference external" href="https://github.com/holoviz/datashader/pull/794">#794</a>, <a class="reference external" href="https://github.com/holoviz/datashader/pull/793">#793</a>, <a class="reference external" href="https://github.com/holoviz/datashader/pull/821">#821</a>, <a class="reference external" href="https://github.com/holoviz/datashader/pull/841">#841</a>, <a class="reference external" href="https://github.com/holoviz/datashader/pull/842">#842</a>)</p></li>
<li><p>Documented new quadmesh support (renaming user guide section 5_Rasters to 5_Grids to reflect the more-general grid support) (<a class="reference external" href="https://github.com/holoviz/datashader/pull/805">#805</a>)</p></li>
</ul>
<p>Bugfixes and compatibility:</p>
<ul class="simple">
<li><p>Avoid double-counting line segments that fit entirely into a single rendered pixel (<a class="reference external" href="https://github.com/holoviz/datashader/pull/839">#839</a>)</p></li>
<li><p>Improved geospatial toolbox, including 75X speedups to viewshed algorithm (<a class="reference external" href="https://github.com/holoviz/datashader/pull/811">#811</a>, <a class="reference external" href="https://github.com/holoviz/datashader/pull/824">#824</a>, <a class="reference external" href="https://github.com/holoviz/datashader/pull/844">#844</a>)</p></li>
</ul>
</section>
<section id="version-0-8-0-2019-10-08">
<h2>Version 0.8.0 (2019-10-08)<a class="headerlink" href="#version-0-8-0-2019-10-08" title="Link to this heading">#</a></h2>
<p>This release includes major contributions from <a class="reference external" href="https://github.com/jonmmease">@jonmmease</a> (quadmesh and filled-area support), <a class="reference external" href="https://github.com/brendancol">@brendancol</a> (geospatial toolbox, tile previewer), <a class="reference external" href="https://github.com/philippjfr">@philippjfr</a> (distributed regridding, dask performance), and <a class="reference external" href="https://github.com/jsignell">@jsignell</a> (examples, maintenance, website).</p>
<p>New features:</p>
<ul class="simple">
<li><p>Native quadmesh (<code class="docutils literal notranslate"><span class="pre">canvas.quadmesh()</span></code> support (for rectilinear and curvilinear grids – 3X faster than approximating with a trimesh; <a class="reference external" href="https://github.com/holoviz/datashader/pull/779">#779</a>)</p></li>
<li><p><a class="reference external" href="https://datashader.org/user_guide/Timeseries.html#Area-plots">Filled area</a> (<code class="docutils literal notranslate"><span class="pre">canvas.area()</span></code> support (<a class="reference external" href="https://github.com/holoviz/datashader/pull/734">#734</a>)</p></li>
<li><p>Expanded <a class="reference external" href="https://datashader.org/user_guide/Geography.html">geospatial toolbox</a>, with support for:</p>
<ul>
<li><p>Zonal statistics (<a class="reference external" href="https://github.com/holoviz/datashader/pull/782">#782</a>)</p></li>
<li><p>Calculating viewshed (<a class="reference external" href="https://github.com/holoviz/datashader/pull/781">#781</a>)</p></li>
<li><p>Calculating proximity (Euclidean and other distance metrics, <a class="reference external" href="https://github.com/holoviz/datashader/pull/772">#772</a>)</p></li>
</ul>
</li>
<li><p>Distributed raster regridding with Dask (<a class="reference external" href="https://github.com/holoviz/datashader/pull/762">#762</a>)</p></li>
<li><p>Improved dask performance (<a class="reference external" href="https://github.com/holoviz/datashader/pull/798">#798</a>, <a class="reference external" href="https://github.com/holoviz/datashader/pull/801">#801</a>)</p></li>
<li><p><code class="docutils literal notranslate"><span class="pre">tile_previewer</span></code> utility function (simple Bokeh-based plotting of local tile sources for debugging; <a class="reference external" href="https://github.com/holoviz/datashader/pull/761">#761</a>)</p></li>
</ul>
<p>Bugfixes and compatibility:</p>
<ul class="simple">
<li><p>Compatibility with latest Numba, Intake, Pandas, and Xarray (<a class="reference external" href="https://github.com/holoviz/datashader/pull/763">#763</a>, <a class="reference external" href="https://github.com/holoviz/datashader/pull/768">#768</a>, <a class="reference external" href="https://github.com/holoviz/datashader/pull/791">#791</a>)</p></li>
<li><p>Improved datetime support (<a class="reference external" href="https://github.com/holoviz/datashader/pull/803">#803</a>)</p></li>
<li><p>Simplified docs (now built on Travis, and no longer requiring GeoViews) and examples (now on examples.pyviz.org)</p></li>
<li><p>Skip rendering of empty tiles (<a class="reference external" href="https://github.com/holoviz/datashader/pull/760">#760</a>)</p></li>
<li><p>Improved performance for point, area, and line glyphs (<a class="reference external" href="https://github.com/holoviz/datashader/pull/780">#780</a>)</p></li>
<li><p><code class="docutils literal notranslate"><span class="pre">InteractiveImage</span></code> and <code class="docutils literal notranslate"><span class="pre">Pipeline</span></code> are now deprecated; removed from examples (<a class="reference external" href="https://github.com/holoviz/datashader/pull/751">#751</a>)</p></li>
</ul>
</section>
<section id="version-0-7-0-2019-04-08">
<h2>Version 0.7.0 (2019-04-08)<a class="headerlink" href="#version-0-7-0-2019-04-08" title="Link to this heading">#</a></h2>
<p>This release includes major contributions from <a class="reference external" href="https://github.com/jonmmease">@jonmmease</a> (ragged array extension, SpatialPointsFrame, row-oriented line storage, dask trimesh support), <a class="reference external" href="https://github.com/jsignell">@jsignell</a> (maintenance, website), and <a class="reference external" href="https://github.com/jbednar">@jbednar</a> (Panel-based dashboard).</p>
<p>New features:</p>
<ul class="simple">
<li><p>Simplified <a class="reference external" href="https://panel.pyviz.org">Panel</a> based <a class="reference external" href="https://datashader.org/dashboard.html">dashboard</a> using new Param features; now only 48 lines with fewer new concepts (<a class="reference external" href="https://github.com/holoviz/datashader/pull/707">#707</a>)</p></li>
<li><p>Added pandas ExtensionArray and Dask support for storing homogeneous ragged arrays (<a class="reference external" href="https://github.com/holoviz/datashader/pull/687">#687</a>)</p></li>
<li><p>Added SpatialPointsFrame and updated census, osm-1billion, and osm examples to use it (<a class="reference external" href="https://github.com/holoviz/datashader/pull/702">#702</a>, <a class="reference external" href="https://github.com/holoviz/datashader/pull/706">#706</a>, <a class="reference external" href="https://github.com/holoviz/datashader/pull/708">#708</a>)</p></li>
<li><p>Expanded 8_Geography.ipynb to document other geo-related functions</p></li>
<li><p>Added Dask support for trimesh rendering, though computing the mesh initially still requires vertices and simplicies to fit into memory (<a class="reference external" href="https://github.com/holoviz/datashader/pull/696">#696</a>)</p></li>
<li><p>Add zero-copy rendering of row-oriented line coordinates, using a new axis argument (<a class="reference external" href="https://github.com/holoviz/datashader/pull/694">#694</a>)</p></li>
</ul>
<p>Bugfixes and compatibility:</p>
<ul class="simple">
<li><p>Added lnglat_to_meters to geo module; new code should import it from there (<a class="reference external" href="https://github.com/holoviz/datashader/pull/708">#708</a>)</p></li>
</ul>
</section>
<section id="version-0-6-9-2019-01-29">
<h2>Version 0.6.9 (2019-01-29)<a class="headerlink" href="#version-0-6-9-2019-01-29" title="Link to this heading">#</a></h2>
<p>This release includes major contributions from <a class="reference external" href="https://github.com/jonmmease">@jonmmease</a> (fixing several long-standing bugs), <a class="reference external" href="https://github.com/jlstevens">@jlstevens</a> (updating all example notebooks to use current syntax, <a class="reference external" href="https://github.com/holoviz/datashader/pull/685">#685</a>), <a class="reference external" href="https://github.com/jbednar">@jbednar</a>, <a class="reference external" href="https://github.com/philippjfr">@philippjfr</a>, and <a class="reference external" href="https://github.com/jsignell">@jsignell</a> (<a class="reference external" href="https://panel/pyviz.org">Panel</a>-based dashboard), and <a class="reference external" href="https://github.com/brendancol">@brendancol</a> (geo utilities).</p>
<p>New features:</p>
<ul class="simple">
<li><p>Replaced outdated 536-line Bokeh <a class="reference external" href="https://github.com/holoviz/datashader/blob/ae72d237d574cbd7103a912fc84094ce10d55344/examples/dashboard/dashboard.py">dashboard.py</a> with 71-line Panel+HoloViews <a class="reference external" href="https://github.com/holoviz/datashader/blob/main/examples/dashboard.ipynb">dashboard</a> (<a class="reference external" href="https://github.com/holoviz/datashader/pull/676">#676</a>)</p></li>
<li><p>Allow aggregating xarray objects (in addition to Pandas and Dask DataFrames) (<a class="reference external" href="https://github.com/holoviz/datashader/pull/675">#675</a>)</p></li>
<li><p>Create WMTS tiles from Datashader data (<a class="reference external" href="https://github.com/holoviz/datashader/pull/636">#636</a>)</p></li>
<li><p>Added various <a class="reference external" href="https://datashader.org/user_guide/8_Geography.html">geographic utility functions</a> (ndvi, slope, aspect, hillshade, mean, bump map, Perlin noise) (<a class="reference external" href="https://github.com/holoviz/datashader/pull/661">#661</a>)</p></li>
<li><p>Made OpenSky data public (<a class="reference external" href="https://github.com/holoviz/datashader/pull/691">#691</a>)</p></li>
</ul>
<p>Bugfixes and compatibility:</p>
<ul class="simple">
<li><p>Fix array bounds error on line glyph (<a class="reference external" href="https://github.com/holoviz/datashader/pull/683">#683</a>)</p></li>
<li><p>Fixed the span argument to tf.shade (<a class="reference external" href="https://github.com/holoviz/datashader/pull/680">#680</a>)</p></li>
<li><p>Fixed composite.add (for use in spreading) to clip colors rather than overflow (<a class="reference external" href="https://github.com/holoviz/datashader/pull/689">#689</a>)</p></li>
<li><p>Fixed gerrymandering shape file (<a class="reference external" href="https://github.com/holoviz/datashader/pull/688">#688</a>)</p></li>
<li><p>Updated to match Bokeh (<a class="reference external" href="https://github.com/holoviz/datashader/pull/656">#656</a>), Dask (<a class="reference external" href="https://github.com/holoviz/datashader/pull/681">#681</a>, <a class="reference external" href="https://github.com/holoviz/datashader/pull/667">#667</a>), Pandas/Numpy (<a class="reference external" href="https://github.com/holoviz/datashader/pull/697">#697</a>)</p></li>
</ul>
</section>
<section id="version-0-6-8-2018-09-11">
<h2>Version 0.6.8 (2018-09-11)<a class="headerlink" href="#version-0-6-8-2018-09-11" title="Link to this heading">#</a></h2>
<p>Minor, mostly bugfix, release with some speed improvements.</p>
<p>New features:</p>
<ul class="simple">
<li><p>Added Strange Attractors example (<a class="reference external" href="https://github.com/holoviz/datashader/pull/632">#632</a>)</p></li>
<li><p>Major speedup: optimized dask datashape detection (<a class="reference external" href="https://github.com/holoviz/datashader/pull/634">#634</a>)</p></li>
</ul>
<p>Bugfixes and compatibility:</p>
<ul class="simple">
<li><p>Silenced inappropriate warnings (<a class="reference external" href="https://github.com/holoviz/datashader/pull/631">#631</a>)</p></li>
<li><p>Fixed various other bugs, including <a class="reference external" href="https://github.com/holoviz/datashader/pull/644">#644</a></p></li>
<li><p>Added handling for zero data and zero range (<a class="reference external" href="https://github.com/holoviz/datashader/pull/612">#612</a>, <a class="reference external" href="https://github.com/holoviz/datashader/pull/648">#648</a>)</p></li>
</ul>
</section>
<section id="version-0-6-7-2018-07-07">
<h2>Version 0.6.7 (2018-07-07)<a class="headerlink" href="#version-0-6-7-2018-07-07" title="Link to this heading">#</a></h2>
<p>Minor compatibility release.</p>