--- periodic_kdtree.py.old	2014-04-18 17:30:39.000000000 +0200
+++ periodic_kdtree.py	2014-04-18 17:31:59.000000000 +0200
@@ -102,7 +102,7 @@
         # all neighbors within the given distance_upper_bound".
 
         # Cap distance_upper_bound
-        distance_upper_bound = np.min(distance_upper_bound,
+        distance_upper_bound = min(distance_upper_bound,
                                       self.max_distance_upper_bound)
 
         # Run queries over all relevant images of x
@@ -128,7 +128,7 @@
         # is a single point, not an array of points
         
         # Cap r
-        r = np.min(r, self.max_distance_upper_bound)
+        r = min(r, self.max_distance_upper_bound)
 
         # Run queries over all relevant images of x
         results = []
@@ -213,7 +213,7 @@
         # all neighbors within the given distance_upper_bound".
 
         # Cap distance_upper_bound
-        distance_upper_bound = np.min(distance_upper_bound,
+        distance_upper_bound = min(distance_upper_bound,
                                       self.max_distance_upper_bound)
 
         # Run queries over all relevant images of x
