# HG changeset patch
# User Nicolas Saunier <nicolas.saunier@polymtl.ca>
# Date 1342215025 14400
# Node ID 942455aff82991b7e0d28b54d36f56c7e8ef3582
# Parent  ee1caff48b039e048b6bb1794b91cf8f54794c5b# Parent  d2b68111f87ec72df804b74fea233076368599e5
merged with the addition of Mohamed's code

diff -r d2b68111f87e -r 942455aff829 python/utils.py
--- a/python/utils.py	Fri Jul 13 17:08:31 2012 -0400
+++ b/python/utils.py	Fri Jul 13 17:30:25 2012 -0400
@@ -164,6 +164,14 @@
 # maths section
 #########################
 
+def sortXY(X,Y):
+    'returns the sorted (x, Y(x)) sorted on X'
+    D = {}
+    for x, y in zip(X,Y):
+        D[x]=y
+    xsorted = sorted(D.keys())
+    return xsorted, [D[x] for x in xsorted]
+
 def ceilDecimals(v, nDecimals):
     '''Rounds the number at the nth decimal
     eg 1.23 at 0 decimal is 2, at 1 decimal is 1.3'''