issues: 876786652
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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 |
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| 876786652 | MDU6SXNzdWU4NzY3ODY2NTI= | 5263 | to_zarr append errors when using encoding point in wrong direction | 35538868 | open | 0 | 0 | 2021-05-05T19:57:57Z | 2021-07-04T03:28:00Z | NONE | When I try to append to a zarr store created from encoded data it isn't clear that I need to decode the data I want to append. When I run the attached code, I get an error: ValueError: failed to prevent overwriting existing key add_offset in attrs. This is probably an encoding field used by xarray to describe how a variable is serialized. To proceed, remove this key from the variable's attributes manually. Following that error, if I just remove the encoding I can append to the zarr store, but the data isn't encoding correctly. The fix is to xr.decode_cf(data) and then append. It would help if the to_zarr append documentation made this clearer. Example given here: https://github.com/cgentemann/cloud_science/blob/master/make_zarr/zarr_append_issue.ipynb |
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13221727 | issue |