ex-6: redo 6-smoothed.pdf with the right font in the title

The code in plot.py is also made more easy to use for passing from one
mode to the other (show or save figure).

ex-6/plot.py

@@ -1,18 +1,22 @@
 #!/usr/bin/env python
 
-from pylab import *
+from matplotlib import pyplot as plt
+import numpy as np
 import sys
 
-figure()
+a, b, f = np.loadtxt(sys.stdin, unpack=True)
 
-a, b, f = loadtxt(sys.stdin, unpack=True)
-title(sys.argv[1] if len(sys.argv) > 1 else "", loc='right')
-hist(a, np.insert(b, 0, a[0]), weights=100*f/sum(f),
-     histtype='stepfilled', color='#e3c5ca', edgecolor='#92182b')
-xlabel(r'$\theta$ (radians)')
-ylabel(r'$I(\theta)$ (a.u.)')
+plt.figure()
+# plt.figure(figsize=(5, 3))
+# plt.rcParams['font.size'] = 8
 
-xlabel('$\\theta$')
-ylabel('$I(\\theta)$')
-tight_layout()
-show()
+plt.title(sys.argv[1] if len(sys.argv) > 1 else "", loc='right')
+plt.xlabel(r'$\theta$ (radians)')
+plt.ylabel(r'$I(\theta)$ (a.u.)')
+plt.hist(a, np.insert(b, 0, a[0]), weights=100*f/sum(f),
+         histtype='stepfilled', color='#e3c5ca', edgecolor='#92182b')
+
+plt.tight_layout()
+plt.show()
+# name = sys.argv[2] if len(sys.argv) > 1 else "prova"
+# plt.savefig('notes/images/' + name + '.pdf')