add missing return info in swiss roll docstring

ogrisel · ogrisel · commit fda0db3e933a · 2011-05-07T19:08:33.000+02:00
diff --git a/scikits/learn/datasets/samples_generator.py b/scikits/learn/datasets/samples_generator.py
@@ -362,6 +362,10 @@ def swiss_roll(n_samples, noise=0.0):
     X : array of shape [n_samples, 3]
         The points.
 
+    t : array of shape [n_samples]
+        The univariate possition of the sample according to the main dimension
+        of the points in the manifold.
+
     Notes
     -----
     Original code from:
