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Allow non-unique and non-monotonic coordinates in get_clean_interp_index and polyfit #4099

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merged 4 commits into from
Jun 5, 2020

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aulemahal
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@aulemahal aulemahal commented May 27, 2020

  • Closes #xxxx
  • Tests added
  • Passes isort -rc . && black . && mypy . && flake8
  • Fully documented, including whats-new.rst for all changes and api.rst for new API

Pull #3733 added da.polyfit and xr.polyval and is using xr.core.missing.get_clean_interp_index in order to get the fitting coordinate. However, this method is stricter than what polyfit needs: as in numpy.polyfit, non-unique and non-monotonic indexes are acceptable. This PR adds a strict keyword argument to get_clean_interp_index so we can skip the uniqueness and monotony tests.

ds.polyfit and xr.polyval were modified to use that keyword. I only added tests for get_clean_interp_index, could add more for polyfit if requested.

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LGTM. Thanks @aulemahal

@dcherian dcherian merged commit 09df5ca into pydata:master Jun 5, 2020
dcherian added a commit to TomNicholas/xarray that referenced this pull request Jun 24, 2020
…o-combine

* 'master' of github.com:pydata/xarray: (81 commits)
  use builtin python types instead of the numpy alias (pydata#4170)
  Revise pull request template (pydata#4039)
  pint support for Dataset (pydata#3975)
  drop eccodes in docs (pydata#4162)
  Update issue templates inspired/based on dask (pydata#4154)
  Fix failing upstream-dev build & remove docs build (pydata#4160)
  Improve typehints of xr.Dataset.__getitem__ (pydata#4144)
  provide a error summary for assert_allclose (pydata#3847)
  built-in accessor documentation (pydata#3988)
  Recommend installing cftime when time decoding fails. (pydata#4134)
  parameter documentation for DataArray.sel (pydata#4150)
  speed up map_blocks (pydata#4149)
  Remove outdated note from datetime accessor docstring (pydata#4148)
  Fix the upstream-dev pandas build failure (pydata#4138)
  map_blocks: Allow passing dask-backed objects in args (pydata#3818)
  keep attrs in reset_index (pydata#4103)
  Fix open_rasterio() for WarpedVRT with specified src_crs (pydata#4104)
  Allow non-unique and non-monotonic coordinates in get_clean_interp_index and polyfit (pydata#4099)
  update numpy's intersphinx url (pydata#4117)
  xr.infer_freq (pydata#4033)
  ...
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2 participants