Merge pull request #3072 from thocevar/mosaic

[FIX] OWMosaic: Don't offer String meta attributes

Author: lanzagar

Orange/widgets/visualize/owmosaic.py

@@ -383,7 +383,7 @@ def init_combos(self, data):
 
         icons = gui.attributeIconDict
         for attr in chain(data.domain.variables, data.domain.metas):
-            if attr.is_primitive:
+            if attr.is_primitive():
                 for combo in self.attr_combos:
                     combo.addItem(icons[attr], attr.name)