Re: about the minimum of elements of a matrix

[Martin Helm]

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));