added quiver demo

jdh2358 · jdh2358 · commit a93634db5b38 · 2005-03-29T03:19:29.000Z
svn path=/trunk/matplotlib/; revision=1100
diff --git a/examples/quiver_demo.py b/examples/quiver_demo.py
@@ -0,0 +1,22 @@
+
+from pylab import *
+
+X,Y = meshgrid( arange(0,2*pi,.2),arange(0,2*pi,.2) )
+U = cos(X)
+V = sin(Y)
+
+quiver( X, Y, U, V, 0.2, color=True )
+show()
+
+quiver( U, V, 0.3 )
+show()
+
+quiver( U, V, color=True )
+show()
+
+quiver( U, V, color=U+V )
+show()
+
+quiver( X, Y, U, V )
+show()
+
