8000 Return arrow collection as 2nd argument of streamplot. by tonysyu · Pull Request #803 · matplotlib/matplotlib · GitHub
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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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Return arrow collection as 2nd argument of streamplot.
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@tonysyu
tonysyu committed Sep 2, 2012
commit 391c24ae0dde742715f24ba1f13581c930e62c8e
2 changes: 1 addition & 1 deletion lib/matplotlib/pyplot.py
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Expand Up @@ -3055,7 +3055,7 @@ def streamplot(x, y, u, v, density=1, linewidth=None, color=None, cmap=None,
draw_if_interactive()
finally:
ax.hold(washold)
sci(ret)
sci(ret[0])
return ret

# This function was autogenerated by boilerplate.py. Do not edit as
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6 changes: 5 additions & 1 deletion lib/matplotlib/streamplot.py
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Expand Up @@ -108,6 +108,7 @@ def streamplot(axes, x, y, u, v, density=1, linewidth=None, color=None,
cmap = cm.get_cmap(cmap)

streamlines = []
arrows = []
for t in trajectories:
tgx = np.array(t[0])
tgy = np.array(t[1])
Expand Down Expand Up @@ -139,6 +140,7 @@ def streamplot(axes, x, y, u, v, density=1, linewidth=None, color=None,
transform=transform,
**arrow_kw)
axes.add_patch(p)
arrows.append(p)

lc = mcollections.LineCollection(streamlines,
transform=transform,
Expand All @@ -151,7 +153,9 @@ def streamplot(axes, x, y, u, v, density=1, linewidth=None, color=None,

axes.update_datalim(((x.min(), y.min()), (x.max(), y.max())))
axes.autoscale_view(tight=True)
return lc

arrow_collection = matplotlib.collections.PatchCollection(arrows)
return lc, arrow_collection


# Coordinate definitions
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0