The navigator now displays the plots and data in a tree that shows the ancestry information.

system/workflow.py

@@ -116,9 +116,12 @@ class WorkflowView (gtk.VBox):
     def run_function(self, function):
         logger.log('debug', 'Starting function: %s' % function.name)
         project = self.workflow.app.project
+        parent_data = project.current_data
+
         new_data = function.run(project.current_data)
         if new_data != None:
-            project.add_data(None, new_data)
+            project.add_data(parent_data, new_data)
+
         logger.log('debug', 'Function ended: %s' % function.name)
         
     def button_click_handler(self, button):