# HG changeset patch
# User Yoshua Bengio <bengioy@iro.umontreal.ca>
# Date 1216491984 14400
# Node ID 0231eeac11c965bcd941f673c4b30d7ba8ff0879
# Parent  3da4961cc80b26d68deef666808af15384dc4033
Fixed incorrect handling of slice column specifications in ArrayDataSet

diff -r 3da4961cc80b -r 0231eeac11c9 dataset.py
--- a/dataset.py	Sat Jul 19 14:18:35 2008 -0400
+++ b/dataset.py	Sat Jul 19 14:26:24 2008 -0400
@@ -1227,13 +1227,12 @@
                 else:
                     self.fields_columns[fieldname]=fieldcolumns
             elif type(fieldcolumns) is slice:
-                start,step=None,None
-                if not fieldcolumns.start:
+                start,step=fieldcolumns.start,fieldcolumns.step
+                if not start:
                     start=0
-                if not fieldcolumns.step:
+                if not step:
                     step=1
-                if start or step:
-                    self.fields_columns[fieldname]=slice(start,fieldcolumns.stop,step)
+                self.fields_columns[fieldname]=slice(start,fieldcolumns.stop,step)
             elif hasattr(fieldcolumns,"__iter__"): # something like a list
                 for i in fieldcolumns:
                     assert i>=0 and i<data_array.shape[1]