Revision: 8038
http://matplotlib.svn.sourceforge.net/matplotlib/?rev=8038&view=rev
Author: astraw
Date: 2009-12-18 22:25:16 +0000 (Fri, 18 Dec 2009)
Log Message:
-----------
tests: add unit test for prctile
Modified Paths:
--------------
trunk/matplotlib/lib/matplotlib/tests/test_mlab.py
Modified: trunk/matplotlib/lib/matplotlib/tests/test_mlab.py
===================================================================
--- trunk/matplotlib/lib/matplotlib/tests/test_mlab.py 2009-12-17 19:31:21 UTC
(rev 8037)
+++ trunk/matplotlib/lib/matplotlib/tests/test_mlab.py 2009-12-18 22:25:16 UTC
(rev 8038)
@@ -32,3 +32,26 @@
# the bad recarray should trigger a ValueError for having ndim > 1.
mlab.rec2csv(bad,fd)
+
+def test_prctile():
+ # test odd lengths
+ x=[1,2,3]
+ assert mlab.prctile(x,50)==np.median(x)
+
+ # test even lengths
+ x=[1,2,3,4]
+ assert mlab.prctile(x,50)==np.median(x)
+
+ # derived from email sent by jason-sage to MPL-user on 20090914
+ ob1=[1,1,2,2,1,2,4,3,2,2,2,3,4,5,6,7,8,9,7,6,4,5,5]
+ p = [0, 75, 100]
+ expected = [1, 5.5, 9]
+
+ # test vectorized
+ actual = mlab.prctile(ob1,p)
+ assert np.allclose( expected, actual )
+
+ # test scalar
+ for pi, expectedi in zip(p,expected):
+ actuali = mlab.prctile(ob1,pi)
+ assert np.allclose( expectedi, actuali )
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