matplotlib
diff --git a/‎doc/api/api_changes/qualitative colormaps.rst
Copy file name to clipboard
+11Lines changed: 11 additions & 0 deletions b/‎doc/api/api_changes/qualitative colormaps.rst
Copy file name to clipboard
+11Lines changed: 11 additions & 0 deletions
diff --git a/‎doc/users/whats_new/qualitative colormaps.rst
Copy file name to clipboard
+9Lines changed: 9 additions & 0 deletions b/‎doc/users/whats_new/qualitative colormaps.rst
Copy file name to clipboard
+9Lines changed: 9 additions & 0 deletions
@@ -0,0 +1,11 @@
+Qualitative colormaps
+---------------------
+
+Colorbrewer's qualitative/discrete colormaps ("Accent", "Dark2", "Paired",
+"Pastel1", "Pastel2", "Set1", "Set2", "Set3") are now implemented as
+``ListedColormap`` instead of ``LinearSegmentedColormap``.
+
+To use these for images where categories are specified as integers, for
+instance, use::
+
+    plt.imshow(x, cmap='Dark2', norm=colors.NoNorm())
@@ -0,0 +1,9 @@
+Qualitative colormaps
+---------------------
+
+ColorBrewer's "qualitative" colormaps ("Accent", "Dark2", "Paired",
+"Pastel1", "Pastel2", "Set1", "Set2", "Set3") were intended for discrete
+categorical data, with no implication of value, and therefore have been
+converted to ``ListedColormap`` instead of ``LinearSegmentedColormap``, so
+the colors will no longer be interpolated and they can be used for
+choropleths, labeled image features, etc.