Backport PR #15357: Add 'step' and 'barstacked' to histogram_histtypes demo (#15377)

meeseeksmachine · timhoffm · commit 4c76e888ac4c · 2019-10-04T12:53:22.000+02:00
diff --git a/examples/statistics/histogram_histtypes.py b/examples/statistics/histogram_histtypes.py
@@ -4,7 +4,9 @@
 ================================================================
 
 * Histogram with step curve that has a color fill.
+* Histogram with step curve with no fill.
 * Histogram with custom and unequal bin widths.
+* Two histograms with stacked bars.
 
 Selecting different bin counts and sizes can significantly affect the
 shape of a histogram. The Astropy docs have a great section on how to
@@ -17,19 +19,32 @@
 
 np.random.seed(19680801)
 
-mu = 200
-sigma = 25
-x = np.random.normal(mu, sigma, size=100)
+mu_x = 200
+sigma_x = 25
+x = np.random.normal(mu_x, sigma_x, size=100)
 
-fig, (ax0, ax1) = plt.subplots(ncols=2, figsize=(8, 4))
+mu_w = 200
+sigma_w = 10
+w = np.random.normal(mu_w, sigma_w, size=100)
 
-ax0.hist(x, 20, density=True, histtype='stepfilled', facecolor='g', alpha=0.75)
-ax0.set_title('stepfilled')
+fig, axs = plt.subplots(nrows=2, ncols=2)
+
+axs[0, 0].hist(x, 20, density=True, histtype='stepfilled', facecolor='g',
+               alpha=0.75)
+axs[0, 0].set_title('stepfilled')
+
+axs[0, 1].hist(x, 20, density=True, histtype='step', facecolor='g',
+               alpha=0.75)
+axs[0, 1].set_title('step')
+
+axs[1, 0].hist(x, density=True, histtype='barstacked', rwidth=0.8)
+axs[1, 0].hist(w, density=True, histtype='barstacked', rwidth=0.8)
+axs[1, 0].set_title('barstacked')
 
 # Create a histogram by providing the bin edges (unequally spaced).
 bins = [100, 150, 180, 195, 205, 220, 250, 300]
-ax1.hist(x, bins, density=True, histtype='bar', rwidth=0.8)
-ax1.set_title('unequal bins')
+axs[1, 1].hist(x, bins, density=True, histtype='bar', rwidth=0.8)
+axs[1, 1].set_title('bar, unequal bins')
 
 fig.tight_layout()
 plt.show()
