DOC: improve annotation demo

tacaswell · tacaswell · commit 14db9f8c2bfd · 2016-05-21T16:16:47.000-04:00
closes #5994
diff --git a/examples/pylab_examples/annotation_demo.py b/examples/pylab_examples/annotation_demo.py
@@ -50,37 +50,39 @@
     s = np.cos(2*np.pi*t)
     line, = ax.plot(t, s, lw=3, color='purple')
 
-    ax.annotate('axes center', xy=(.5, .5), xycoords='axes fraction',
-                horizontalalignment='center', verticalalignment='center')
+    ax.annotate('figure pixels',
+                xy=(10, 10), xycoords='figure pixels')
 
-    ax.annotate('pixels', xy=(20, 20), xycoords='figure pixels')
+    ax.annotate('figure points', xy=(80, 80),
+                xycoords='figure points')
 
-    ax.annotate('points', xy=(100, 300), xycoords='figure points')
-
-    ax.annotate('offset', xy=(1, 1), xycoords='data',
-                xytext=(-15, 10), textcoords='offset points',
+    ax.annotate('point offset from data', xy=(2, 1),
+                xycoords='data',
+                xytext=(-15, 25), textcoords='offset points',
                 arrowprops=dict(facecolor='black', shrink=0.05),
                 horizontalalignment='right', verticalalignment='bottom',
                 )
 
-    ax.annotate('local max', xy=(3, 1), xycoords='data',
+    ax.annotate('axes fraction', xy=(3, 1), xycoords='data',
                 xytext=(0.8, 0.95), textcoords='axes fraction',
                 arrowprops=dict(facecolor='black', shrink=0.05),
                 horizontalalignment='right', verticalalignment='top',
                 )
 
-    ax.annotate('a fractional title', xy=(.025, .975),
+    ax.annotate('figure fraction', xy=(.025, .975),
                 xycoords='figure fraction',
                 horizontalalignment='left', verticalalignment='top',
                 fontsize=20)
 
     # use negative points or pixels to specify from right, top -10, 10
     # is 10 points to the left of the right side of the axes and 10
     # points above the bottom
-    ax.annotate('bottom right (points)', xy=(-10, 10),
-                xycoords='axes points',
-                horizontalalignment='right', verticalalignment='bottom',
-                fontsize=20)
+    ax.annotate('pixel offset from axes fraction', xy=(1, 0),
+                xycoords='axes fraction',
+                xytext=(-20, 20),
+                textcoords='offset pixels',
+                horizontalalignment='right',
+                verticalalignment='bottom')
 
 
 if 1:
