more exceptiosn and edge cases

src/c3nav/mapdata/models/locations.py

@@ -1,6 +1,7 @@
 import re
 from collections import OrderedDict
 
+import numpy as np
 from django.core.cache import cache
 from django.db import models
 from django.db.models import Q
@@ -290,6 +291,10 @@ class PointLocation(Location):
     def location_id(self):
         return 'c:%s:%d:%d' % (self.level.name, self.x*100, self.y*100)
 
+    @cached_property
+    def xy(self):
+        return np.array((self.x, self.y))
+
     @cached_property
     def description(self):
         from c3nav.routing.graph import Graph