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BUG: handle empty levels array in contour, closes #7486 #8719

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Merged
merged 1 commit into from
Jun 14, 2017
Merged

BUG: handle empty levels array in contour, closes #7486 #8719

merged 1 commit into from
Jun 14, 2017

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efiring
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@efiring efiring commented Jun 4, 2017

This relates to line contours only, not to filled contours.

This handles the case where an empty array is provided as the
"levels" kwarg, or where for any reason there are no levels within
the data range. An example is the case of uniform z. The
levels array is then set to the minimum value of z so that
the plotting can proceed, and a warning is generated.

PR Summary

PR Checklist

  • Has Pytest style unit tests
  • Code is PEP 8 compliant
  • New features are documented, with examples if plot related
  • Documentation is sphinx and numpydoc compliant
  • Added an entry to doc/users/whats_new.rst if major new feature
  • Documented in doc/api/api_changes.rst if API changed in a backward-incompatible way

@efiring
BUG: handle empty levels array in contour, closes matplotlib#7486
6ac197f 
This relates to line contours only, not to filled contours.

This handles the case where an empty array is provided as the
"levels" kwarg, or where for any reason there are no levels within
the data range.  An example is the case of uniform z. The
levels array is then set to the minimum value of z so that
the plotting can proceed, and a warning is generated.
@efiring efiring added this to the 2.1 (next point release) milestone Jun 4, 2017
@dstansby dstansby merged commit 6ed951e into matplotlib:master Jun 14, 2017
@efiring efiring deleted the contour_validation branch October 24, 2021 19:52
@tacaswell tacaswell mentioned this pull request Aug 30, 2022
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@tacaswell tacaswell tacaswell approved these changes

@dstansby dstansby dstansby approved these changes

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