Merge pull request #933 from astaric/fix-pc-colors

ParallelCoordinates: Add default color.
biolab · Dec 17, 2015 · 6c1841e · 6c1841e
2 parents e5b0753 + dcebd34
commit 6c1841e
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/Orange/widgets/visualize/owparallelgraph.py b/Orange/widgets/visualize/owparallelgraph.py
@@ -244,7 +244,8 @@ def draw_groups(self):
                 nsigma2 = math.sqrt(sigma2) / diff[i + 1]
 
                 polygon = ParallelCoordinatePolygon(i, nmu1, nmu2, nsigma1, nsigma2, phi,
-                                                    tuple(self.colors[j]))
+                                                    tuple(self.colors[j]) if self.colors
+                                                    else (0, 0, 0))
                 polygon.attach(self)
 
         self.replot()