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Backport PR #11090 on branch v2.2.2-doc #11102

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Backport PR #11090 on branch v2.2.2-doc #11102

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77 changes: 37 additions & 40 deletions lib/matplotlib/contour.py
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Original file line number Diff line number Diff line change
Expand Up @@ -735,7 +735,42 @@ class ContourSet(cm.ScalarMappable, ContourLabeler):
"""
Store a set of contour lines or filled regions.

User-callable method: clabel
User-callable method: `~.Axes.clabel`

Parameters
----------
ax : `~.axes.Axes`

levels : [level0, level1, ..., leveln]
A list of floating point numbers indicating the contour
levels.

allsegs : [level0segs, level1segs, ...]
List of all the polygon segments for all the *levels*.
For contour lines ``len(allsegs) == len(levels)``, and for
filled contour regions ``len(allsegs) = len(levels)-1``. The lists
should look like::

level0segs = [polygon0, polygon1, ...]
polygon0 = array_like [[x0,y0], [x1,y1], ...]

allkinds : ``None`` or [level0kinds, level1kinds, ...]
Optional list of all the polygon vertex kinds (code types), as
described and used in Path. This is used to allow multiply-
connected paths such as holes within filled polygons.
If not ``None``, ``len(allkinds) == len(allsegs)``. The lists
should look like::

level0kinds = [polygon0kinds, ...]
polygon0kinds = [vertexcode0, vertexcode1, ...]

If *allkinds* is not ``None``, usually all polygons for a
particular contour level are grouped together so that
``level0segs = [polygon0]`` and ``level0kinds = [polygon0kinds]``.

kwargs :
Keyword arguments are as described in the docstring of
`~.Axes.contour`.

Attributes
----------
Expand All @@ -754,44 +789,6 @@ class ContourSet(cm.ScalarMappable, ContourLabeler):
"""

def __init__(self, ax, *args, **kwargs):
"""
Draw contour lines or filled regions, depending on
whether keyword arg *filled* is ``False`` (default) or ``True``.

The first three arguments must be:

*ax*: axes object.

*levels*: [level0, level1, ..., leveln]
A list of floating point numbers indicating the contour
levels.

*allsegs*: [level0segs, level1segs, ...]
List of all the polygon segments for all the *levels*.
For contour lines ``len(allsegs) == len(levels)``, and for
filled contour regions ``len(allsegs) = len(levels)-1``. The lists
should look like::

level0segs = [polygon0, polygon1, ...]
polygon0 = array_like [[x0,y0], [x1,y1], ...]

*allkinds*: *None* or [level0kinds, level1kinds, ...]
Optional list of all the polygon vertex kinds (code types), as
described and used in Path. This is used to allow multiply-
connected paths such as holes within filled polygons.
If not ``None``, ``len(allkinds) == len(allsegs)``. The lists
should look like::

level0kinds = [polygon0kinds, ...]
polygon0kinds = [vertexcode0, vertexcode1, ...]

If *allkinds* is not ``None``, usually all polygons for a
particular contour level are grouped together so that
``level0segs = [polygon0]`` and ``level0kinds = [polygon0kinds]``.

Keyword arguments are as described in the docstring of
`~.Axes.contour`.
"""
self.ax = ax
self.levels = kwargs.pop('levels', None)
self.filled = kwargs.pop('filled', False)
Expand Down Expand Up @@ -1377,7 +1374,7 @@ class QuadContourSet(ContourSet):
"""
Create and store a set of contour lines or filled regions.

User-callable method: :meth:`clabel`
User-callable method: `~.Axes.clabel`

Attributes
----------
Expand Down