Merge pull request #29 from jrmyp/ilp

ENH Parser.select function (twin of deselect)

attelo/parser/interface.py

@@ -62,6 +62,17 @@ def multiply(dpack, attach=None, label=None):
                       label=label)
         return dpack.set_graph(graph)
 
+    @staticmethod
+    def select(dpack, idxes):
+        """ Mark any pairs except the ones indicated as unrelated
+
+        See Also
+        --------
+        `Parser.deselect`"""
+        unwanted_idxes = np.ones_like(dpack.graph.attach, dtype=bool)
+        unwanted_idxes[idxes] = False
+        return Parser.deselect(dpack, unwanted_idxes)
+
     @staticmethod
     def deselect(dpack, idxes):
         """