# HG changeset patch
# User James Bergstra <bergstrj@iro.umontreal.ca>
# Date 1301973738 14400
# Node ID 9d941cd774791d9369b7ddef790d7212150c6aa3
# Parent  272879b84d308a637d79b2cfb4cfe4fcd1c34f8c
fixed bug in tile_slice

diff -r 272879b84d30 -r 9d941cd77479 pylearn/io/image_tiling.py
--- a/pylearn/io/image_tiling.py	Mon Apr 04 19:03:48 2011 -0400
+++ b/pylearn/io/image_tiling.py	Mon Apr 04 23:22:18 2011 -0400
@@ -187,9 +187,10 @@
                 dtype='uint8')
 
     if scale_each:
-        x = X.copy()
+        uintX = numpy.empty(X.shape, dtype='uint8')
         for i, Xi in enumerate(X):
-            X[i] = scale_0_255(Xi)
+            uintX[i] = scale_0_255(Xi)
+        X = uintX
     else:
         X = scale_0_255(X)
     return tile_slices_to_image_uint8(X, tile_shape=tile_shape)