diff -r 1a4b145c0607 -r 935cffdf3904 server/python/django/renkanmanager/utils.py
--- a/server/python/django/renkanmanager/utils.py	Tue Sep 23 10:40:40 2014 +0200
+++ b/server/python/django/renkanmanager/utils.py	Thu Sep 25 12:16:00 2014 +0200
@@ -60,7 +60,10 @@
                 order, nb = nb
             offset = float(self.max_length - nb) / 2
             for i in xrange(nb):
-                self.cat_nb_nodes[c].append({ "x": order*500, "y": 100*(i+offset) })
+                if c=="northwest":
+                    self.cat_nb_nodes[c].append({ "x": order*500, "y": offset })
+                else:
+                    self.cat_nb_nodes[c].append({ "x": order*500, "y": 100*(i+offset) })
 
 
 
@@ -77,7 +80,10 @@
             for i in xrange(nb):
                 radius = (order*500) if order>0 else 100
                 angle = 2 * math.pi * i / nb
-                self.cat_nb_nodes[c].append({ "x": radius*math.cos(angle), "y": radius*math.sin(angle) })
+                if c=="northwest":
+                    self.cat_nb_nodes[c].append({ "x": -radius, "y": -radius })
+                else:
+                    self.cat_nb_nodes[c].append({ "x": radius*math.cos(angle), "y": radius*math.sin(angle) })