Merge pull request #5619 from jaimefrio/unique_docstring

juliantaylor · juliantaylor · commit d685309b388a · 2015-03-01T13:31:08.000+01:00
DOC: Describe return_counts keyword in np.unique docstring
diff --git a/numpy/lib/arraysetops.py b/numpy/lib/arraysetops.py
@@ -97,10 +97,11 @@ def unique(ar, return_index=False, return_inverse=False, return_counts=False):
     """
     Find the unique elements of an array.
 
-    Returns the sorted unique elements of an array. There are two optional
+    Returns the sorted unique elements of an array. There are three optional
     outputs in addition to the unique elements: the indices of the input array
-    that give the unique values, and the indices of the unique array that
-    reconstruct the input array.
+    that give the unique values, the indices of the unique array that
+    reconstruct the input array, and the number of times each unique value
+    comes up in the input array.
 
     Parameters
     ----------
