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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. :-)*
>* *
>* *
>* _______________________________________________*
>* Help-octave mailing list*
>* address@hidden*
>* https://www.cae.wisc.edu/mailman/listinfo/help-octave*
>* *
--
_______________________________________________________________
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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