FIX: convert lena to float32 (originally it's ints)

Fabian Pedregosa · Fabian Pedregosa · commit ec72437067fa · 2012-01-09T14:28:22.000+01:00
Fixes exception in recent scipy.
diff --git a/sklearn/feature_extraction/tests/test_image.py b/sklearn/feature_extraction/tests/test_image.py
@@ -75,7 +75,7 @@ def test_connect_regions_with_grid():
 
 
 def _downsampled_lena():
-    lena = sp.misc.lena()
+    lena = sp.misc.lena().astype(np.float32)
     lena = lena[::2, ::2] + lena[1::2, ::2] + lena[::2, 1::2] + \
            lena[1::2, 1::2]
     lena = lena[::2, ::2] + lena[1::2, ::2] + lena[::2, 1::2] + \
