diff --git a/python/network.py b/python/network.py
index 7fc7f5b..b14d2b7 100644
--- a/python/network.py
+++ b/python/network.py
@@ -22,6 +22,9 @@ class Node:
         self.o = outgoing
         self.i = incoming
 
+#    def p():
+#        return self.p
+
 '''
     Definition of the Fiber class.
     Duplicate of the Node class in network
@@ -213,7 +216,7 @@ def importNWT(str):
             edge = readFiber(file)
             fiberList.append(edge)
         
-    exportNWT("/home/pavel/Documents/Python/NetLayout/from_python_seg.nwt", nodeList, fiberList)        
+    #exportNWT("/home/pavel/Documents/Python/NetLayout/from_python_seg.nwt", nodeList, fiberList)        
     print(str)
     return nodeList, fiberList;
     
@@ -270,11 +273,23 @@ def getCircularLayout(graph, dim, radius):
 Return the positions dictionary for the Spring layout.
 '''    
 def getSpringLayout(graph, pos, iterations, scale):
-    return nx.spring_layout(graph, 2, None, pos, iterations, weight='weight', scale, None)
+    return nx.spring_layout(graph, 2, None, pos, iterations, 'weight', scale, None)
         
 '''
 Draws the graph.
 '''        
 def drawGraph(graph, pos):
     nx.draw(graph, pos)
-    return        
\ No newline at end of file
+    return
+
+def aabb(nodeList, edgeList):
+
+    lower = nodeList[0].p.copy()
+    upper = lower.copy()
+    for i in nodeList:
+        for c in range(len(lower)):
+            if lower[c] > i.p[c]:
+                lower[c] = i.p[c]
+            if upper[c] < i.p[c]:
+                upper[c] = i.p[c]
+    return lower, upper
--
libgit2 0.21.4