odc-geo repo?

[snowman2]

Thoughts on moving geospatial tools to a separate package/repository (maybe odc-geo)?

Maybe combine:

1. opendatacube-core geobox functionality
2. reprojection utilities here: https://github.com/opendatacube/odc-tools/blob/develop/libs/algo/odc/algo/_warp.py
3. Other?

This would be useful for the geospatial xarray community. For example, the geobox stuff is used in geocube and the dask supported reprojection stuff would be a nice engine to use in rioxarray.

[Kirill888]

In general I agree Alan. I think moving some of the lower level functionality into a separate library will benefit datacube users as well as allowing easier re-use by other projects in geospatial space. We might even get larger contributor base for "simpler library" without all the database hurdle that new users of datacube need to deal with.

It will be a significant refactor and will take quite a bit of developer time, so this is not something I can commit to on my own. I will raise this proposal with members of ODC Steering Council. And while I do not expect resistance to this proposal, I do expect that it won't happen quickly, as there are currently some high-priority tasks that won't be finished soon. We can probably justify including this in ODC 2.0 work.

On a technical level this will involve moving geometry and xarray related utilities out of datacube-core into a stand-alone library, then moving some of the odc-tools libraries there as well. Tests will need to move as well, new tests might need to be written as I won't be surprised if some of the coverage comes from integration tests rather than unit-tests. Various utilities used by those tests will need to be moved too. Ideally I would like to keep commit history as well. So it's a sizeable amount of work to undertake, and probably best done by folks already familiar with the current codebase.

pinging some ODC people for visibility:

@alexgleith @woodcockr @gamedaygeorge @GypsyBojangles

[snowman2]

• CRS: CF grid_mapping attribute to encoding datacube-core#1084
• Proposal: Use the recommended method for xarray extensions. datacube-core#519

In case you are interested, rioxarray might be a helpful tool for managing CRS/nodata/transform geospatial information:

• https://corteva.github.io/rioxarray/stable/getting_started/crs_management.html
• https://corteva.github.io/rioxarray/stable/getting_started/nodata_management.html

[Kirill888]

FYI: @snowman2
https://github.com/opendatacube/datacube-core/wiki/ODC-EP-06---Extract-Geometry-Utilities-into-a-Separate-Package

[RichardScottOZ]

Thanks Kirill.

[Kirill888]

Work starting here: https://github.com/opendatacube/odc-geo

[snowman2]

Thanks @Kirill888 👍