Function names are now folders in the navigator.

workflows/go_workflow.py

@@ -117,7 +117,9 @@ class DatasetLog(workflow.Function):
         logger.log('notice', 'Taking the log of dataset %s' % data.get_name())
         d = data.asarray()
         d = log(d)
-        return [dataset.Dataset(d)]
+        new_data_name = 'log(%s)' % data.get_name()
+        ds = dataset.Dataset(d, name=new_data_name)
+        return [ds]
 
 class DatasetLoadFunction(workflow.Function):
     """Loader for previously pickled Datasets."""