Version 1.2

Enhancements

• Introduce pagination of the halo lists in the web interface
• Add support for using SVG and PDF as the plot format in the web interface (@cphyc)
• Add ability to specify colour range of images in web interface (@cphyc)
• Add properties stars_shrink_center and gas_shrink_center which give centers based purely on stars and gas respectively (@Martin-Rey)
• Permit use of preloop functions (evaluated at timestep rather than halo level) when evaluating live calculations
• Various other minor improvements to the web interface

Bug fixes

• Changes from using % to using _ to escape slashes in filenames of simulations, fixing an ambiguity that could cause problems (@j-davies-ari)
• Fixes an issue with AHF which, when run using MPI, numbers halos randomly rather than sequentially. This necessitates introducing an extra database column; tangos now distinguishes between (1) halo_number [tangos primary reference point] (2) finder_id [the ID assigned by the halo finder] (3) finder_offset [the 0-based offset of the halo in the finder catalogue, which may be different from finder_id in the case of AHF] (@mtremmel)
• Fix issue #135: the timing logging could sometimes crash, if the procedure they were monitoring crashed

Version 1.1.1

This version fixes poor performance of earlier, earliest, later, latest and related functionality, and fixes a bug in find_progenitor and find_descendant that was triggered when some snapshots were missing data.

Version 1.1.0

Bug fixes

• Fix multiple bugs in earliest(), earlier(..), latest(), later(..) live calculations and related functionality
• Issue #77, unreliability when cross-linking different simulations (@mrey)
• Compatibility with Python 3.7 and 3.8
• Compute correct contamination_fraction when writing in server mode (@mrey)
• Fix bug in __repr__ for Links when weight is None
• Fix bug in property writer, where pre-requisites could be erroneously flagged as not present simply because they were links rather than properties

Features

• The tolerance for considering two timesteps 'the same time' is now configurable within config.py
• Add ==, <= and >= comparison operators to live calculation
• Added a tool to import AHF merger trees (@TobiBu)
• Add ability to import hostHalo/childHalo from AHF
• Extent abs() live-calculation function to take absolute value of scalars as well as vector quantities

Version 1.0.9

Bug fixes

• Fix a bug where calculations on multiple objects (such as with calculate_all, calculate_for_progenitors etc) would raise exceptions when no results are available, instead of the documented behaviour of returning an empty result.
• Fix bug in tangos write where multiple copies of a property would be written even if --force was not specified.

Enhancements

• Improvements to live calculation documentation

Version 1.0.8

Bug fixes

• Fixed a bug that could lead to inaccurate results when using link searches such as earlier(n) or later(n) across multiple halos (e.g. using calculate_all)

Enhancements

• Add a find_progenitor live calculation facility, which searches for progenitors giving a maximum or minimum value of a property
• Improved live calculation documentation

Version 1.0.7

Enhancements

• Add an option to download merger trees as SVG from the web interface (@Martin-Rey)
• Improve efficiency of calculate_all queries and further massive performance improvements to MultiSourceMultiHop tree searches by creating a temporary index on the temporary halo link table
• Improve efficiency of tangos write MPI sessions, by implementing a shared lock for reading the database (so that exclusive rights are not required except for writing)
• Add support for Eagle-like runs, i.e. GadgetHDF format with halo catalogue as two arrays (groups/subgroups). Add a tutorial using Eagle data.
• A better colour scheme for the merger tree
• Enhance the way that links can be distinguished in the live calculation syntax, and document in live.md (@mtremmel)
• Improvements to the handling of Changa black holes (@mtremmel)

Bug fixes

• Fix bug where viewing an array in the web view could lead to an infinite recursion crash

Version 1.0.6

• Bug fix for compatibility with databases created with very old versions of tangos
• Major performance fix for MultiSourceMultiHopStrategy that speeds up tracing multiple halos across multiple timesteps by factors of up to 50

Version 1.0.5

Fixes a bug in StarFormHistogram introduced in Version 1.0.4

Version 1.0.4: bug fix release

• Fixes a bug in the auto-detection of floating/integer numbers within text-based halo stat files (such as those generated by AHF)
• Clarifies the documentation on using Changa's black holes
• Fixes a bug where images would be incorrectly smoothed when using tangos write in default load mode
• Reinstates the ability to import simulations from another database (although this feature is currently quite slow)
• Adds ability to store chunked time histograms at a different time resolution for each simulation

Version 1.0.3

• Adds support for using rockstar catalogues for gadget simulations, and importing consistent trees merger information
• Fixes bugs in following merger information when cross-linking information is also present
• Speed improvements, especially to merger tree construction and Halo.earliest, Halo.latest methods
• Adds support for the filesystem layout used by the Caterpillar project
• Other minor bug fixes