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ListConvolve Padding Q?

  • To: mathgroup at smc.vnet.net
  • Subject: [mg42492] ListConvolve Padding Q?
  • From: markhahn2000 at yahoo.com (mark)
  • Date: Fri, 11 Jul 2003 02:57:53 -0400 (EDT)
  • Sender: owner-wri-mathgroup at wolfram.com

If I have an nxm list/matrix and want to do a ListConvolve on it I
will either lose (k-1)/2 rows and columns for a kxk convolution kernal
unless I use some padding.  How can I mirror (k-1)/2 rows and columns
around my original matrix to get the same size matrix after list
conolving?  The work around I have used is to just manipulate the
input matrix using the `MatrixManipulation` package functions (which
unfortunately are limited to only nxm sized matrices and not nxmxz
sized matrices... but I would much prefer
if I could just write it into the ListConvolve function using some
trick mapping or something.

thanks,

mark


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