pynrrd is a pure-Python module for reading and writing nrrd files into and from numpy arrays.
The module's only dependency is numpy.
python setup.py install
import numpy as np
import nrrd
# some sample numpy data
data = np.zeros((5,4,3,2))
filename = 'testdata.nrrd'
# write to a nrrd file
nrrd.write(filename, data)
# read the data back from file
readdata, options = nrrd.read(filename)
print readdata.shape
print options
Most of the nrrd format specification is implemented. Exceptions are:
- files where encoding is 'txt', 'text', or 'ascii'
- files where "data file" is "LIST"
Other shortcomings:
- More documentation is desirable, in particular for the options that can be passed to the write function.
- pynrrd is currently probably fairly forgiving in what it accepts for as nrrd files and could be made stricter.
See LICENSE.