diff --git a/GMDA_projet.py b/GMDA_projet.py
index 1988ab797434d6dee6ac4f0cd27c8a4e8b05dd25..493779babdae2aba8c8632ed3379b63d9479b732 100755
--- a/GMDA_projet.py
+++ b/GMDA_projet.py
@@ -18,11 +18,12 @@ def data_gen( dimen, numGau, n_samples, mu, std):
     return data
 
 def vector_gen(dimen, magnitude = None, normalize = True):
+    #randomly generate vectors with option to adjust magnitude and normalize center to 0
     if magnitude==None:
         magnitude = np.ones(dimen)
     rand = np.random.rand(dimen)
     if normalize:
-        return (rand-0.5)*2*magnitude
+        return (rand-0.5)*magnitude
     else :
         return rand*magnitude