issues: 1985969769

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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
1985969769 PR_kwDOAMm_X85fDaBX 8434 Automatic region detection and transpose for `to_zarr()` 39069044 closed 0     15 2023-11-09T16:15:08Z 2023-11-14T18:34:50Z 2023-11-14T18:34:50Z CONTRIBUTOR   0 pydata/xarray/pulls/8434
  • [x] Closes #7702, #8421
  • [x] Tests added
  • [x] User visible changes (including notable bug fixes) are documented in whats-new.rst

A quick pass at implementing these two improvements for zarr region writes:

  1. allow passing region={dim: "auto"}, which opens the existing zarr store and identifies the correct slice to write to, using a variation of the approach suggested by @DahnJ here. We also check for non-matching coordinates and non-contiguous indices.
  2. automatically transpose dimensions if they otherwise match the existing store but are out of order
 
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