diff --git a/lib/matplotlib/quiver.py b/lib/matplotlib/quiver.py
index f2c7aab2d187..aef58c979c6e 100644
--- a/lib/matplotlib/quiver.py
+++ b/lib/matplotlib/quiver.py
@@ -228,7 +228,7 @@ class QuiverKey(martist.Artist):
""" Labelled arrow for use as a quiver plot scale key."""
halign = {'N': 'center', 'S': 'center', 'E': 'left', 'W': 'right'}
valign = {'N': 'bottom', 'S': 'top', 'E': 'center', 'W': 'center'}
- pivot = {'N': 'mid', 'S': 'mid', 'E': 'tip', 'W': 'tail'}
+ pivot = {'N': 'middle', 'S': 'middle', 'E': 'tip', 'W': 'tail'}
def __init__(self, Q, X, Y, U, label, **kw):
martist.Artist.__init__(self)
@@ -708,6 +708,10 @@ def _h_arrows(self, length):
X = X - X[:, 3, np.newaxis] # numpy bug? using -= does not
# work here unless we multiply
# by a float first, as with 'mid'.
+ elif self.pivot != 'tail':
+ raise ValueError(("Quiver.pivot must have value in {{'middle', "
+ "'tip', 'tail'}} not {}").format(self.pivot))
+
tooshort = length < self.minlength
if tooshort.any():
# Use a heptagonal dot:
diff --git a/lib/matplotlib/tests/baseline_images/test_quiver/quiver_key_pivot.png b/lib/matplotlib/tests/baseline_images/test_quiver/quiver_key_pivot.png
new file mode 100644
index 000000000000..4763bd26d841
Binary files /dev/null and b/lib/matplotlib/tests/baseline_images/test_quiver/quiver_key_pivot.png differ
diff --git a/lib/matplotlib/tests/test_quiver.py b/lib/matplotlib/tests/test_quiver.py
index e95edd47f9ba..21d96aa7d1c0 100644
--- a/lib/matplotlib/tests/test_quiver.py
+++ b/lib/matplotlib/tests/test_quiver.py
@@ -92,6 +92,22 @@ def test_quiver_copy():
assert q0.V[0] == 2.0
+@image_comparison(baseline_images=['quiver_key_pivot'],
+ extensions=['png'], remove_text=True)
+def test_quiver_key_pivot():
+ fig, ax = plt.subplots()
+
+ u, v = np.mgrid[0:2*np.pi:10j, 0:2*np.pi:10j]
+
+ q = ax.quiver(np.sin(u), np.cos(v))
+ ax.set_xlim(-2, 11)
+ ax.set_ylim(-2, 11)
+ ax.quiverkey(q, 0.5, 1, 1, 'N', labelpos='N')
+ ax.quiverkey(q, 1, 0.5, 1, 'E', labelpos='E')
+ ax.quiverkey(q, 0.5, 0, 1, 'S', labelpos='S')
+ ax.quiverkey(q, 0, 0.5, 1, 'W', labelpos='W')
+
+
if __name__ == '__main__':
import nose
nose.runmodule()
pFad - Phonifier reborn
Pfad - The Proxy pFad of © 2024 Garber Painting. All rights reserved.
Note: This service is not intended for secure transactions such as banking, social media, email, or purchasing. Use at your own risk. We assume no liability whatsoever for broken pages.
Alternative Proxies:
Alternative Proxy
pFad Proxy
pFad v3 Proxy
pFad v4 Proxy