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Re: Excluding elements of a matrix (Joseph Wakeling)

 From: Alexander Barth Subject: Re: Excluding elements of a matrix (Joseph Wakeling) Date: Thu, 21 Dec 2006 10:19:49 -0500 User-agent: Thunderbird 1.5.0.7 (X11/20060913)

```An alternative way, is to do

octave:2> A = magic(4)
A =

16    2    3   13
5   11   10    8
9    7    6   12
4   14   15    1

octave:3> A(1:end ~= 2,:)
ans =

16    2    3   13
9    7    6   12
4   14   15    1

Works in octave 2.9.9 and matlab.

cheers,
Alex

Joseph Wakeling wrote:
> John W. Eaton wrote:
>> You can, but it is not necessary.  If k == 1, then the first
>> expression is 1:0, or [](1x0).  If k == columns(a), then the second
>> expression is k+1:k, or [](1x0), so it just works.
>
> Aah, very nice.  Thanks for the correction.  That makes things much easier.
>
> I still think the "excluding" notation would be a nice idea though. :-)
>
>
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--
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Alexander Barth

Ocean Circulation Group
University of South Florida
College of Marine Science
140 Seventh Avenue South
St. Petersburg, Florida  33701
USA

Phone: +1-727-553-3508     FAX:   +1-727-553-1189

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