SF.net SVN: matplotlib:[5826] trunk/matplotlib/examples/pylab_examples/ barb_demo.py

[<jd...@us...>]

Revision: 5826
          http://matplotlib.svn.sourceforge.net/matplotlib/?rev=5826&view=rev
Author:   jdh2358
Date:     2008-07-24 02:02:01 +0000 (Thu, 24 Jul 2008)

Log Message:
-----------
restored broken barb demo

Modified Paths:
--------------
    trunk/matplotlib/examples/pylab_examples/barb_demo.py

Modified: trunk/matplotlib/examples/pylab_examples/barb_demo.py
===================================================================
--- trunk/matplotlib/examples/pylab_examples/barb_demo.py	2008-07-23 17:09:15 UTC (rev 5825)
+++ trunk/matplotlib/examples/pylab_examples/barb_demo.py	2008-07-24 02:02:01 UTC (rev 5826)
@@ -0,0 +1,33 @@
+'''
+Demonstration of wind barb plots
+'''
+import matplotlib.pyplot as plt
+import numpy as np
+
+x = np.linspace(-5, 5, 5)
+X,Y = np.meshgrid(x, x)
+U, V = 12*X, 12*Y
+
+data = [(-1.5,.5,-6,-6),
+        (1,-1,-46,46),
+        (-3,-1,11,-11),
+        (1,1.5,80,80)]
+
+#Default parameters for arbitrary set of vectors
+ax = plt.subplot(2,2,1)
+ax.barbs(*zip(*data))
+
+#Default parameters, uniform grid
+ax = plt.subplot(2,2,2)
+ax.barbs(X, Y, U, V)
+
+#Change parameters for arbitrary set of vectors
+ax = plt.subplot(2,2,3)
+ax.barbs(flagcolor='r', barbcolor=['b','g'], barb_increments=dict(half=10,
+    full=20, flag=100), *zip(*data))
+
+#Showing colormapping with uniform grid. 
+ax = plt.subplot(2,2,4)
+ax.barbs(X, Y, U, V, np.sqrt(U*U + V*V), fill_empty=True, rounding=False)
+
+plt.show()


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