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Make barbs draw correctly (Fixes #5803) #5914

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Merged
tacaswell merged 2 commits into from
Jan 26, 2016
Merged

Make barbs draw correctly (Fixes #5803) #5914

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ec6910c
Make barbs draw correctly again (Fixes #5803)
dopplershift Jan 26, 2016
b8f0352
Add a test for Barbs.
dopplershift Jan 26, 2016
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5 changes: 5 additions & 0 deletions lib/matplotlib/quiver.py
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Original file line number Diff line number Diff line change
Expand Up @@ -922,6 +922,11 @@ def __init__(self, ax, *args, **kw):
kw['edgecolors'] = barbcolor
kw['facecolors'] = flagcolor

# Explicitly set a line width if we're not given one, otherwise
# polygons are not outlined and we get no barbs
if 'linewidth' not in kw and 'lw' not in kw:
kw['linewidth'] = 1

# Parse out the data arrays from the various configurations supported
x, y, u, v, c = _parse_args(*args)
self.x = x
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Binary file added lib/matplotlib/tests/baseline_images/test_quiver/barbs_test_image.png
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11 changes: 11 additions & 0 deletions lib/matplotlib/tests/test_quiver.py
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Expand Up @@ -108,6 +108,17 @@ def test_quiver_key_pivot():
ax.quiverkey(q, 0, 0.5, 1, 'W', labelpos='W')


@image_comparison(baseline_images=['barbs_test_image'],
extensions=['png'], remove_text=True)
def test_barbs():
x = np.linspace(-5, 5, 5)
X, Y = np.meshgrid(x, x)
U, V = 12*X, 12*Y
fig, ax = plt.subplots()
ax.barbs(X, Y, U, V, np.sqrt(U*U + V*V), fill_empty=True, rounding=False,
sizes=dict(emptybarb=0.25, spacing=0.2, height=0.3),
cmap='viridis')

if __name__ == '__main__':
import nose
nose.runmodule()
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