added binary colormap and barcode demo

jdh2358 · jdh2358 · commit 4c6b6f541dff · 2007-02-13T20:55:47.000Z
svn path=/trunk/matplotlib/; revision=3019
diff --git a/examples/barcode_demo.py b/examples/barcode_demo.py
@@ -1,22 +1,23 @@
 from pylab import figure, show, cm, nx
 
+# the bar
+x = nx.mlab.rand(500)
+x[x>0.7] = 1.
+x[x<=0.7] = 0.
+
 axprops = dict(xticks=[], yticks=[])
 barprops = dict(aspect='auto', cmap=cm.binary, interpolation='nearest')
 
 fig = figure()
 
 # a vertical barcode
-x = nx.mlab.rand(500,1)
-x[x>0.8] = 1.
-x[x<=0.8] = 0.
+x.shape = len(x), 1
 ax = fig.add_axes([0.1, 0.3, 0.1, 0.6], **axprops)
 ax.imshow(x, **barprops)
 
 
 # a horizontal barcode
-x = nx.mlab.rand(1,500)
-x[x>0.8] = 1.
-x[x<=0.8] = 0.
+x.shape = 1, len(x)
 ax = fig.add_axes([0.3, 0.1, 0.6, 0.1], **axprops)
 ax.imshow(x, **barprops)
 
