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From: John W. Eaton
Subject: xcorr
Date: Mon, 24 Nov 1997 13:15:49 -0600

On 24-Nov-1997, Thomas Hoffmann <address@hidden> wrote:

| Maybe this belongs to the bugs list or not to an Octave ("kernel")
| list at all:
| The contributed script xcorr.m (in a subdir "imagep") can only
| process vectors, when given to it two non-string parameters. For
| that it checks
| if (is_matrix(x) || is_matrix(y))
|       error("Only vectors are supported, use xcorr2 for matrix correlation");
|     end
| Shouldn't that read "!is_vector(x)" instead of "is_matrix(x)",
| simply because a vector is a (special) matrix, too?

Yes, it probably should use some other test.  You should probably
contact the author of the file in question.  I don't think xcorr is
distributed with Octave.


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