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Re: Attacking ND arrays


From: Ryan Peterson
Subject: Re: Attacking ND arrays
Date: Wed, 22 Jun 2005 16:36:37 -0500

Looks good, thanks very much.

From: Jonathan Stickel <address@hidden>
Reply-To: address@hidden
To: Ryan Peterson <address@hidden>
CC: address@hidden
Subject: Re: Attacking ND arrays
Date: Wed, 22 Jun 2005 12:56:33 -0700

Maybe you want to use the squeeze command.

octave:7> help squeeze
squeeze is a built-in function

 -- Built-in Function:  squeeze (X)
     Remove singleton dimensions from X and return the result.


Ryan Peterson wrote:
Is there a "good" way to take 2d slices of ND matrices, either in octave-forge or upcoming in future versions of octave? Say I have a 4d matrix named foo with 5 values in each direction and I want to look at a slice of it. Intuitively, I went for this:

b=foo(4,3,:,:);
imagesc(b)

But got an error about transposing ND arrays. I remember reading something about someone doing this within C but am curious if and how people have done this in octave. The most straightforward method I can think of is a loop but that can be time consuming. Any recommendations/suggestions?

Thanks,
Ryan Peterson




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Octave is freely available under the terms of the GNU GPL.

Octave's home on the web:  http://www.octave.org
How to fund new projects:  http://www.octave.org/funding.html
Subscription information:  http://www.octave.org/archive.html
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