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Description
Overview
Attempting to modify/retrive values in a zarr array with fancy indexing results in an error.
Minimal, reproducible code sample
For instance, a tuple of list indices
import zarr
array = zarr.zeros((20, 20))
array[[1, 2, 3], [1, 2, 3]] = 1Results in the following:
IndexError: unsupported selection item for basic indexing; expected integer or slice, got <class 'list'>
However, this works usingvindex
array.vindex[[1, 2, 3], [1, 2, 3]] = 1
print(array.vindex[[1, 2, 3], [1, 2, 3]])
# Output: [1. 1. 1.]Problem description
Zarr's Array class does not support fancy indexing via the standard numpy-like syntax, which causes issues when attempting to write to zarr arrays via napari's label layer. These problems arise because several of the label editing tools in napari (e.g., paintbrush, fill tool, etc) require fancy indexing. @jni and myself are hoping that the logic in vindex can be incorporated to Array's __setitem__ and __getitem__. Any advice you can offer in this regard would be much appreciated!
Version and installation information
zarr.__version__--> 2.4.0numcodecs.__version__--> 0.7.2- Version of Python interpreter --> 3.8.5
- Operating system --> Mac
- How Zarr was installed --> conda
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