issues: 2213636579
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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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| 2213636579 | I_kwDOAMm_X86D8Wnj | 8887 | resetting multiindex may be buggy | 2448579 | open | 0 | 1 | 2024-03-28T16:23:38Z | 2024-03-29T07:59:22Z | MEMBER | What happened?Resetting a MultiIndex dim coordinate preserves the MultiIndex levels as IndexVariables. We should either reset the indexes for the multiindex level variables, or warn asking the users to do so This seems to be the root cause exposed by https://github.com/pydata/xarray/pull/8809 cc @benbovy What did you expect to happen?No response Minimal Complete Verifiable Example```Python import numpy as np import xarray as xr ND DataArray that gets stacked along a multiindexda = xr.DataArray(np.ones((3, 3)), coords={"dim1": [1, 2, 3], "dim2": [4, 5, 6]}) da = da.stack(feature=["dim1", "dim2"]) Extract just the stacked coordinates for saving in a datasetds = xr.Dataset(data_vars={"feature": da.feature}) xr.testing.assertions._assert_internal_invariants(ds.reset_index(["feature", "dim1", "dim2"]), check_default_indexes=False) # succeeds xr.testing.assertions._assert_internal_invariants(ds.reset_index(["feature"]), check_default_indexes=False) # fails, but no warning either ``` |
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13221727 | issue |