ex-1: change name from slides.py to misc.py

Also add the possibility to create the median.pdf plot.

ex-1/plots/misc.py

@@ -11,11 +11,12 @@ import sys
 #
 # -n → agrs.note → do the Landau plot with the notes
 # -b → args.both → do the Landau-Moyal plot
+# -m → args.area → do the Landau median plot
 
 
 def moyal(x, μ, σ):
     N = (1)/(np.sqrt(2 * np.pi) * σ)
-    return N * np.exp(- 0.5 * ((x - μ)/σ + np.exp( - (x - μ)/σ)))
+    return N * np.exp(- 0.5 * ((x - μ)/σ + np.exp(- (x - μ)/σ)))
 
 
 def main(args):
@@ -25,7 +26,7 @@ def main(args):
 
     elif args.save:
         plt.rcParams['font.size'] = 8
-        if args.both:
+        if (args.both or args.area):
             plt.figure(figsize=(3, 2))
         elif args.note:
             plt.figure(figsize=(5, 3))
@@ -69,6 +70,13 @@ def main(args):
     x, y = np.loadtxt(sys.stdin, unpack=True)
     plt.plot(x, y, color='#92182b', label='Landau')
 
+    # Color the area under the function
+    if args.area:
+        median = 1.3557804
+        x0 = np.argmin(abs(median - x))
+        plt.fill_between(x[:x0], y[:x0], color='#ff99a8')
+        plt.fill_between(x[x0:], y[x0:], color='#b28e94')
+
     # do Moyal plot
     if args.both:
         μ = -0.22278298
@@ -86,6 +94,8 @@ def main(args):
             plt.savefig('notes/images/1-notes.pdf')
         if args.both:
             plt.savefig('slides/images/both-pdf.pdf', transparent=True)
+        if args.area:
+            plt.savefig('slides/images/median.pdf', transparent=True)
 
 
 if __name__ == '__main__':
@@ -103,5 +113,8 @@ if __name__ == '__main__':
     parser.add_argument('-n', '--note',
                         action='store_true', default=False,
                         help='do the note plot')
+    parser.add_argument('-a', '--area',
+                        action='store_true', default=False,
+                        help='do the area plot')
     args = parser.parse_args()
     main(args)