Loosen tolerance on flaky image comparison tests

scottshambaugh · scottshambaugh · commit f4ce6ba04032 · 2026-03-04T16:03:56.000-07:00
diff --git a/lib/mpl_toolkits/mplot3d/axes3d.py b/lib/mpl_toolkits/mplot3d/axes3d.py
@@ -1872,7 +1872,7 @@ def drag_pan(self, button, key, x, y):
         R = -R / self._box_aspect * self._dist
         duvw_projected = R.T @ np.array([du, dv, dw])
 
-        # Calculate pan distance in transformed coordinates for non-linear scale handling
+        # Calculate pan distance in transformed coordinates for non-linear scales
         minx, maxx, miny, maxy, minz, maxz = self._get_scaled_limits()
         dx = (maxx - minx) * duvw_projected[0]
         dy = (maxy - miny) * duvw_projected[1]
@@ -2026,7 +2026,7 @@ def _get_w_centers_ranges(self):
         For non-linear scales (log, symlog, etc.), centers and ranges are
         computed in transformed coordinates to ensure uniform zoom/pan behavior.
         """
-        # Get limits in transformed coordinates for proper zoom/pan with non-linear scales
+        # Get limits in transformed coordinates for non-linear scale zoom/pan
         minx, maxx, miny, maxy, minz, maxz = self._get_scaled_limits()
         cx = (maxx + minx)/2
         cy = (maxy + miny)/2
diff --git a/lib/mpl_toolkits/mplot3d/tests/test_axes3d.py b/lib/mpl_toolkits/mplot3d/tests/test_axes3d.py
@@ -2877,7 +2877,7 @@ def _make_triangulation_data():
     return x, y, z
 
 
-@mpl3d_image_comparison(['scale3d_lines_log.png'], style='mpl20')
+@mpl3d_image_comparison(['scale3d_lines_log.png'], style='mpl20', tol=0.03)
 def test_scale3d_lines_log():
     """Test Line3D and Line3DCollection with log scale (plot, wireframe)."""
     fig = plt.figure()
@@ -2937,7 +2937,7 @@ def test_scale3d_bar3d_log():
     ax.set(xscale='log', yscale='log', zscale='log')
 
 
-@mpl3d_image_comparison(['scale3d_contour_log.png'], style='mpl20')
+@mpl3d_image_comparison(['scale3d_contour_log.png'], style='mpl20', tol=0.03)
 def test_scale3d_contour_log():
     """Test contour and contourf with log scale."""
     fig = plt.figure()
@@ -2954,7 +2954,7 @@ def test_scale3d_contour_log():
     ax2.set(xscale='log', yscale='log', zscale='log')
 
 
-@mpl3d_image_comparison(['scale3d_stem_quiver_log.png'], style='mpl20')
+@mpl3d_image_comparison(['scale3d_stem_quiver_log.png'], style='mpl20', tol=0.03)
 def test_scale3d_stem_quiver_log():
     """Test stem and quiver with log scale."""
     fig = plt.figure()
