Deprecate the Accent colormap, in anticipation of changes in MPL 2.0

dipy/data/__init__.py

@@ -362,6 +362,9 @@ def mrtrix_spherical_functions():
 
 def get_cmap(name):
     """Makes a callable, similar to maptlotlib.pyplot.get_cmap"""
+    if name.lower() == "accent":
+        raise ValueError("The `Accent` colormap is deprecated as of version",
+                         " 0.12 of Dipy. Please use another colormap")
     global dipy_cmaps
     if dipy_cmaps is None:
         filename = pjoin(DATA_DIR, "dipy_colormaps.json")

dipy/viz/tests/test_fvtk.py

@@ -109,14 +109,17 @@ def test_colormap():
 @npt.dec.skipif(not fvtk.have_matplotlib)
 def test_colormaps_matplotlib():
     v = np.random.random(1000)
-    for name in 'jet', 'Blues', 'Accent', 'bone':
+    for name in 'jet', 'Blues', 'bone':
         # Matplotlib version of get_cmap
         rgba1 = fvtk.get_cmap(name)(v)
         # Dipy version of get_cmap
         rgba2 = data.get_cmap(name)(v)
         # dipy's colormaps are close to matplotlibs colormaps, but not perfect
         npt.assert_array_almost_equal(rgba1, rgba2, 1)
 
+    # The "Accent" colormap is deprecated as of 0.12:
+    npt.assert_raises(ValueError, data.get_cmap, 'Accent')
+
 
 if __name__ == "__main__":