added a matplotlib example for future plotting

plots/qhull_vs_delny/plot.py

@@ -0,0 +1,23 @@
+import numpy as np
+import matplotlib.pyplot as plt
+
+bash = np.loadtxt('output.bash.cgd', unpack = True)
+py   = np.loadtxt('output.python.cgd', unpack = True)
+
+
+plt.figure(1)
+ax = plt.subplot(211)
+ax.set_title("up")
+plt.plot(bash[0], bash[1], 'b--')
+plt.ylabel('time (sec)')
+
+ax = plt.subplot(212)
+ax.set_title("down")
+plt.plot(py[0], py[1])
+
+
+plt.xlabel('total points')
+plt.ylabel('time (sec)')
+
+
+plt.savefig('asdf.png')