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added explicit 'zorder' kwarg to Colection and LineCollection. #1654

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Merged
merged 2 commits into from
Jan 14, 2013
Merged

added explicit 'zorder' kwarg to Colection and LineCollection. #1654

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b3dafb9
added explicit 'zorder' kwarg to `Colection` and `LineCollection`.
Dec 31, 2012
bd097a7
documentation tweak
Jan 14, 2013
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15 changes: 12 additions & 3 deletions lib/matplotlib/collections.py
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Original file line number Diff line number Diff line change
Expand Up @@ -49,6 +49,8 @@ class Collection(artist.Artist, cm.ScalarMappable):
* *cmap*: None (optional for
:class:`matplotlib.cm.ScalarMappable`)
* *hatch*: None
* *zorder*: 1


*offsets* and *transOffset* are used to translate the patch after
rendering (default no offsets). If offset_position is 'screen'
Expand All @@ -72,7 +74,7 @@ class Collection(artist.Artist, cm.ScalarMappable):
_transOffset = transforms.IdentityTransform()
_transforms = []

zorder = 1


def __init__(self,
edgecolors=None,
Expand All @@ -88,6 +90,7 @@ def __init__(self,
hatch=None,
urls=None,
offset_position='screen',
zorder=1,
**kwargs
):
"""
Expand All @@ -107,7 +110,8 @@ def __init__(self,
self.set_urls(urls)
self.set_hatch(hatch)
self.set_offset_position(offset_position)

self.set_zorder(zorder)

self._uniform_offsets = None
self._offsets = np.array([], np.float_)
# Force _offsets to be Nx2
Expand Down Expand Up @@ -897,7 +901,7 @@ class LineCollection(Collection):
i.e., the properties cycle if the ``len`` of props is less than the
number of segments.
"""
zorder = 2


def __init__(self, segments, # Can be None.
linewidths=None,
Expand All @@ -909,6 +913,7 @@ def __init__(self, segments, # Can be None.
norm=None,
cmap=None,
pickradius=5,
zorder=2,
**kwargs
):
"""
Expand Down Expand Up @@ -959,6 +964,9 @@ def __init__(self, segments, # Can be None.
*pickradius* is the tolerance for mouse clicks picking a line.
The default is 5 pt.

*zorder*
The zorder of the LineCollection. Default is 2

The use of :class:`~matplotlib.cm.ScalarMappable` is optional.
If the :class:`~matplotlib.cm.ScalarMappable` array
:attr:`~matplotlib.cm.ScalarMappable._A` is not None (ie a call to
Expand Down Expand Up @@ -987,6 +995,7 @@ def __init__(self, segments, # Can be None.
norm=norm,
cmap=cmap,
pickradius=pickradius,
zorder=zorder,
**kwargs)

self.set_segments(segments)
Expand Down