[python-dtcwt] 171/497: use a faster slice-based method in dtwavexfm2

[Ghislain Vaillant]

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ghisvail-guest pushed a commit to branch debian/sid
in repository python-dtcwt.

commit a1bcbefe080a28c68be9ba677be245e654d32981
Author: Rich Wareham <rjw57 at cam.ac.uk>
Date:   Sat Nov 9 13:50:13 2013 +0000

    use a faster slice-based method in dtwavexfm2
---
 dtcwt/transform2d.py | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/dtcwt/transform2d.py b/dtcwt/transform2d.py
index b7bd02d..2d8e124 100644
--- a/dtcwt/transform2d.py
+++ b/dtcwt/transform2d.py
@@ -105,11 +105,11 @@ def dtwavexfm2(X, nlevels=3, biort=DEFAULT_BIORT, qshift=DEFAULT_QSHIFT, include
         row_size, col_size = LoLo.shape
         if row_size % 4 != 0:
             # Extend by 2 rows if no. of rows of LoLo are not divisable by 4
-            LoLo = np.vstack((LoLo[[0],:], LoLo, LoLo[[-1],:]))
+            LoLo = np.vstack((LoLo[:1,:], LoLo, LoLo[-1:,:]))
 
         if col_size % 4 != 0:
             # Extend by 2 cols if no. of cols of LoLo are not divisable by 4
-            LoLo = np.hstack((LoLo[:,[0]], LoLo, LoLo[:,[-1]]))
+            LoLo = np.hstack((LoLo[:,:1], LoLo, LoLo[:,-1:]))
 
         # Do even Qshift filters on rows.
         Lo = coldfilt(LoLo,h0b,h0a).T

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