ENH: anti-alias down-sampled images

jklymak · jklymak · commit 0da081821c86 · 2019-03-20T21:46:26.000-07:00
diff --git a/lib/matplotlib/image.py b/lib/matplotlib/image.py
@@ -249,6 +249,7 @@ def set_antialiased(self, antialiased):
         any user supplied filters are ignored, and a Lanczos filter is
         applied with radius `2 * M_data / M_image`.
         """
+        self._antialiased = antialiased
 
     def set_alpha(self, alpha):
         """
@@ -442,7 +443,7 @@ def _make_image(self, A, in_bbox, out_bbox, clip_bbox, magnification=1.0,
                                        dtype=A_scaled.dtype)
                 if self.get_antialiased() and A.shape[0] > out_height:
                     self.set_interpolation('lanczos')
-                    self.set_filterrad(2.0 * A.shape[0] / out_height )
+                    self.set_filterrad(3.0 * A.shape[0] / out_height )
 
                 # resample the input data to the correct resolution and shape
                 _image.resample(A_scaled, A_resampled,
