boxplot demo 2: set random seed so plots are identical

svn path=/trunk/matplotlib/; revision=8033

Author: astraw

examples/pylab_examples/boxplot_demo2.py

@@ -16,6 +16,9 @@
 randomDists = ['Normal(1,1)',' Lognormal(1,1)', 'Exp(1)', 'Gumbel(6,4)',
               'Triangular(2,9,11)']
 N = 500
+
+np.random.seed(3) # make identical plots each time
+
 norm = np.random.normal(1,1, N)
 logn = np.random.lognormal(1,1, N)
 expo = np.random.exponential(1, N)