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Re: about the minimum of elements of a matrix
From: |
Martin Helm |
Subject: |
Re: about the minimum of elements of a matrix |
Date: |
Tue, 21 Dec 2010 00:10:39 +0100 |
User-agent: |
KMail/1.13.5 (Linux/2.6.34.7-0.5-desktop; KDE/4.5.4; x86_64; ; ) |
Am Montag, 20. Dezember 2010, 23:44:58 schrieb Søren Hauberg:
> man, 20 12 2010 kl. 17:23 -0500, skrev Doug Stewart:
> > On Mon, Dec 20, 2010 at 5:02 PM, george.brida
> >
> > <address@hidden> wrote:
> > hello friends,
> > is there a function that gives a minimum a(i, j) of the
> > elements of a matrix and the corresponding number of rows and
> > column (ie it returns the values of i and j).
> > Thank you in advance.
> > George.
> >
> >
> >
> >
> > _______________________________________________
> > Help-octave mailing list
> > address@hidden
> > https://www-old.cae.wisc.edu/mailman/listinfo/help-octave
> >
> > Take a look at min
> > help min
> >
> >
> > mm=min(min(a)))
> > [i,ij] =find (a==mm)
>
> Or alternatively:
>
> [val, idx] = min (A (:));
> [i, j] = ind2sub (size (A), idx);
>
> Søren
>
This will show the first element which has the minimum value. If all index
pairs are of interest where the matrix has its minimum value:
val = min(A(:));
[i,j] =ind2sub(size(A),find(A==val));