[fix] fix datareduction operation

id06workflow/core/experiment/operation/datareduction.py

@@ -53,7 +53,7 @@ class DataReduction(OverwritingOperation):
         if cache_data is None:
             self._cache_data = self.data[...][::self._z_factor, ::self._y_factor, ::self._x_factor]
         else:
-            self._cache_data = cache_data
+            self._cache_data = cache_data[::self._z_factor, ::self._y_factor, ::self._x_factor]
         return self._cache_data
 
     def compute(self):
@@ -66,9 +66,12 @@ class DataReduction(OverwritingOperation):
             raise ValueError('No data in cache')
 
         self.data = self._cache_data
-        self.clear_cache()
         self.registerOperation()
         return self.data
 
     def clear_cache(self):
         self._cache_data = None
+
+    def key(self):
+        return ' '.join((self._name, 'x:', str(self._x_factor), 'y:',
+                         str(self._y_factor), 'z:', str(self._z_factor)))

orangecontrib/id06workflow/widgets/datareduction.py

@@ -92,12 +92,9 @@ class DataReductionOW(OWWidget):
     def _process(self, experiment):
         if experiment is None:
             return
-        try:
-            operation = DataReduction(experiment=experiment,
-                                      x_factor=self.getXReduction(),
-                                      y_factor=self.getYReduction(),
-                                      z_factor=self.getZReduction())
-            operation.compute()
-            self.send("data", experiment)
-        except Exception as e:
-            _logger.error(e)
+        operation = DataReduction(experiment=experiment,
+                                  x_factor=self.getXReduction(),
+                                  y_factor=self.getYReduction(),
+                                  z_factor=self.getZReduction())
+        operation.compute()
+        self.send("data", experiment)