issues: 1532662115

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id node_id number title user state locked assignee milestone comments created_at updated_at closed_at author_association active_lock_reason draft pull_request body reactions performed_via_github_app state_reason repo type
1532662115 PR_kwDOAMm_X85HWWhx 7437 DRAFT: Implement `open_datatree` in BackendEntrypoint for preliminary DataTree support 3460034 open 0     1 2023-01-13T17:17:41Z 2023-07-31T10:09:18Z   CONTRIBUTOR   1 pydata/xarray/pulls/7437

As discussed among folks at today's Pangeo working meeting (cc @jhamman, @TomNicholas), we are looking to try adding support for DataTree in the Backend API, so that backend engines can readily add DataTree capability. For example, with cfgrib, we could have

```python import xarray as xr

dt = xr.open_datatree("path/to/gribfile.grib", engine="cfgrib") ```

given that cfgrib implements the appropriate method to their BackendEntrypoint subclass. Similarly, with NetCDF files or Zarr stores with groups, we could open as DataTree to obviate the need to specify a single group.

Working Design Doc: https://hackmd.io/Oqeab-54TqOOHd5FdCb5DQ?edit

xref https://github.com/ecmwf/cfgrib/issues/327, https://github.com/openradar/xradar/issues/7

  • ~~Closes #xxxx~~
  • [ ] Tests added
  • [ ] User visible changes (including notable bug fixes) are documented in whats-new.rst
  • [ ] New functions/methods are listed in api.rst
 
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