Merge pull request #6634 from efiring/show_color_cycle

tacaswell · web-flow · commit b1e0a181e0f2 · 2016-06-24T22:11:40.000-04:00
DOC: add example to show the full default color cycle
diff --git a/examples/color/color_cycle_default.py b/examples/color/color_cycle_default.py
@@ -0,0 +1,36 @@
+"""
+Display the colors from the default prop_cycle.
+"""
+
+import numpy as np
+import matplotlib.pyplot as plt
+
+prop_cycle = plt.rcParams['axes.prop_cycle']
+colors = prop_cycle.by_key()['color']
+
+lwbase = plt.rcParams['lines.linewidth']
+thin = float('%.1f' % (lwbase / 2))
+thick = lwbase * 3
+
+fig, axs = plt.subplots(nrows=2, ncols=2, sharex=True, sharey=True)
+for icol in range(2):
+    if icol == 0:
+        lwx, lwy = thin, lwbase
+    else:
+        lwx, lwy = lwbase, thick
+    for irow in range(2):
+        for i, color in enumerate(colors):
+            axs[irow, icol].axhline(i, color=color, lw=lwx)
+            axs[irow, icol].axvline(i, color=color, lw=lwy)
+
+    axs[1, icol].set_facecolor('k')
+    axs[1, icol].xaxis.set_ticks(np.arange(0, 10, 2))
+    axs[0, icol].set_title('line widths (pts): %.1f, %.1f' % (lwx, lwy),
+                           fontsize='medium')
+
+for irow in range(2):
+    axs[irow, 0].yaxis.set_ticks(np.arange(0, 10, 2))
+
+fig.suptitle('Colors in the default prop_cycle', fontsize='large')
+
+plt.show()
diff --git a/examples/tests/backend_driver.py b/examples/tests/backend_driver.py
@@ -45,7 +45,8 @@
             pylab=os.path.join('..', 'pylab_examples'),
             api=os.path.join('..', 'api'),
             units=os.path.join('..', 'units'),
-            mplot3d=os.path.join('..', 'mplot3d'))
+            mplot3d=os.path.join('..', 'mplot3d'),
+            colors=os.path.join('..', 'color'))
 
 
 # files in each dir
@@ -66,6 +67,7 @@
     ]
 
 files['colors'] = [
+    'color_cycle_default.py',
     'color_cycle_demo.py',
     ]
 

Original file line number	Diff line number	Diff line change
`@@ -45,7 +45,8 @@`
`45`	`45`	`pylab=os.path.join('..', 'pylab_examples'),`
`46`	`46`	`api=os.path.join('..', 'api'),`
`47`	`47`	`units=os.path.join('..', 'units'),`
`48`		`- mplot3d=os.path.join('..', 'mplot3d'))`
	`48`	`+ mplot3d=os.path.join('..', 'mplot3d'),`
	`49`	`+ colors=os.path.join('..', 'color'))`
`49`	`50`
`50`	`51`
`51`	`52`	`# files in each dir`
`@@ -66,6 +67,7 @@`
`66`	`67`	`]`
`67`	`68`
`68`	`69`	`files['colors'] = [`
	`70`	`+ 'color_cycle_default.py',`
`69`	`71`	`'color_cycle_demo.py',`
`70`	`72`	`]`
`71`	`73`