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ENH: Add ability to load bands as data_vars #296
Description
@alexamici brought this up in #197 and has been something I have thought about for a while and haven't come up with a great solution yet.
xarray-gdal implementation: https://github.com/bopen/xarray-gdal/blob/main/xarray_gdal/xarray_plugin.py
Benefits:
- It could potentially enable round-trip loading in of data as in Roundtrip export and import of Dataset object to maintain same structure? #249
- Would provide a nice mechanism to store band specific attributes in each variable (possible fix for Store band specific attributes in coordinates #81)
Why hasn't it been done already?
- Backwards compatibility/consistency with
xarray.open_rasterio - Loading it as a
DataArrayallowsopen_rasterioto work with multidimensional files where the band is a coordinate (time). - The coordinate mechanism provides a nice interface for selecting the band you are interested in by an index
rds.sel(band=1).
It may make sense to have an option such as band_as_variable where you can toggle this mode on.
Reacted by Aaron Zuspan and Ashley Sommer
Activity
ashleysommer commentedon Mar 3, 2022
This looks like a really useful feature (and directly related to my issue in #484)
In the
gdalbuildvrttool, you can pass the option-separatethat puts each file into a separate band in the VRT file (and in this case each source file can have a different dtype).So I propose, if you make this an optional behavior, the option could be called
separate.snowman2 commentedon May 12, 2022
Related:
snowman2 commentedon Nov 2, 2022
For those interested, see #600.