Generate reversed ListedColormaps

cgohlke · cgohlke · commit ac36171a2898 · 2015-09-16T15:28:23.000-07:00
diff --git a/lib/matplotlib/_cm_listed.py b/lib/matplotlib/_cm_listed.py
@@ -1036,3 +1036,7 @@
                      ('viridis', _viridis_data)):
 
     cmaps[name] = ListedColormap(data, name=name)
+    # generate reversed colormap
+    name = name + '_r'
+    data = [rgb for rgb in reversed(data)]
+    cmaps[name] = ListedColormap(data, name=name)
