OWDataProjectionWidget: Consider tables with nan-s equal

Author: VesnaT

Orange/widgets/tests/base.py

@@ -896,9 +896,10 @@ def test_none_data(self):
 
     def test_plot_once(self, timeout=DEFAULT_TIMEOUT):
         """Test if data is plotted only once but committed on every input change"""
+        table = Table("heart_disease")
         self.widget.setup_plot = Mock()
         self.widget.commit = Mock()
-        self.send_signal(self.widget.Inputs.data, self.data)
+        self.send_signal(self.widget.Inputs.data, table)
         self.widget.setup_plot.assert_called_once()
         self.widget.commit.assert_called_once()
 
@@ -907,7 +908,7 @@ def test_plot_once(self, timeout=DEFAULT_TIMEOUT):
             self.assertTrue(spy.wait(timeout))
 
         self.widget.commit.reset_mock()
-        self.send_signal(self.widget.Inputs.data_subset, self.data[::10])
+        self.send_signal(self.widget.Inputs.data_subset, table[::10])
         self.widget.setup_plot.assert_called_once()
         self.widget.commit.assert_called_once()
 

Orange/widgets/visualize/utils/widget.py

@@ -420,9 +420,11 @@ def set_data(self, data):
         if not same_domain:
             self.init_attr_values()
         self.openContext(self.data)
-        self.__invalidated = not (data_existed and self.data is not None and
-                                  np.array_equal(effective_data.X,
-                                                 self.effective_data.X))
+        self.__invalidated = not (
+            data_existed and self.data is not None and
+            effective_data.X.shape == self.effective_data.X.shape and
+            np.allclose(effective_data.X,
+                        self.effective_data.X, equal_nan=True))
         if self.__invalidated:
             self.clear()
         self.cb_class_density.setEnabled(self.can_draw_density())