Refactorings Code and Adding Node Filter

netbone/filters.py

@@ -45,7 +45,6 @@ def fraction_filter(backbone, value, narrate=True, secondary_property='weight',
     filter_by = [backbone.property_name]
     ascending = [backbone.ascending]
 
-    value = math.ceil(value * len(data))
 
     if backbone.filter_on == 'Edges':
         filter_by.append(secondary_property)
@@ -58,9 +57,11 @@ def fraction_filter(backbone, value, narrate=True, secondary_property='weight',
             backbone.narrate()
 
         if backbone.filter_on == 'Edges':
+            value = math.ceil(value * len(data))
             return nx.from_pandas_edgelist(data[:value], edge_attr=edge_properties(data))
         else:
             b = backbone.graph.copy()
+            value = math.ceil(value * len(backbone.graph))
             b.remove_nodes_from(list(data[:value].index))
             return b