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Return arrow collection as 2nd argument of streamplot. #803

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Merged
merged 4 commits into from
Sep 2, 2012
Merged

Return arrow collection as 2nd argument of streamplot. #803

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391c24a
Return arrow collection as 2nd argument of streamplot.
tonysyu Mar 28, 2012
57a7d3d
Return container object containing lines and arrows.
tonysyu Apr 28, 2012
9875323
Change return value of `streamplot`.
tonysyu Apr 29, 2012
a7248d9
DOC: Add note about future changes to return value
tonysyu Sep 2, 2012
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Change return value of streamplot. 
- Return object that derives from `object` since deriving from `Container` was not beneficial.
- This return value is a stopgap; the final return value should allow users to set the colormap, alpha, etc. for both lines and arrows.
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@tonysyu
tonysyu committed Sep 2, 2012
commit 9875323ed79767751f05a109e44c5da7556e6ce2
13 changes: 4 additions & 9 deletions lib/matplotlib/streamplot.py
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Original file line number Diff line number Diff line change
Expand Up @@ -8,7 +8,6 @@
import matplotlib.colors as mcolors
import matplotlib.collections as mcollections
import matplotlib.patches as patches
import matplotlib.container as container


__all__ = ['streamplot']
Expand Down Expand Up @@ -50,7 +49,7 @@ def streamplot(axes, x, y, u, v, density=1, linewidth=None, color=None,

Returns
-------
*stream_container* : StreamplotContainer
*stream_container* : StreamplotSet
Container object with attributes
lines : `matplotlib.collections.LineCollection` of streamlines
arrows : collection of `matplotlib.patches.FancyArrowPatch` objects
Expand Down Expand Up @@ -159,19 +158,15 @@ def streamplot(axes, x, y, u, v, density=1, linewidth=None, color=None,
axes.autoscale_view(tight=True)

ac = matplotlib.collections.PatchCollection(arrows)
stream_container = StreamplotContainer(lc, arrows=ac)
stream_container = StreamplotSet(lc, ac)
return stream_container


class StreamplotContainer(container.Container):
class StreamplotSet(object):

def __new__(cls, *kl, **kwargs):
return tuple.__new__(cls)

def __init__(self, lines, arrows=None, **kwargs):
def __init__(self, lines, arrows, **kwargs):
self.lines = lines
self.arrows = arrows
container.Container.__init__(self, lines, **kwargs)


# Coordinate definitions
Expand Down