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Re: Abs highest(extreme) value in a matrix with +ve & -ve elements
From: |
Jordi Gutiérrez Hermoso |
Subject: |
Re: Abs highest(extreme) value in a matrix with +ve & -ve elements |
Date: |
Mon, 23 Jan 2012 12:21:55 -0500 |
On 23 January 2012 11:29, adla.raghu <address@hidden> wrote:
> Cracking, it works, I replaced the ~ with 'X' .
It looks like you're using Octave 3.2.3 or earlier. You should try to update.
> Didnot quite understand line 2 though. wish u could explain
I guess U'RE referring to this line:
m = A(sub2ind (size(A), idx, 1:columns (A)));
If that's so, it's an indexing hack I wish I could avoid. Once U have
the row indices per column, U can use sub2ind to transform those
column + rows (i.e. 1:columns(A) subscripts into linear indices, as if
the matrix were flattened and written columnwise like this:
A = [10 40 70
20 50 80
30 60 90]
Thus for example A(2) is 20 and A(8) is 80.
HTH,
- Jordi G. H.
- Abs highest(extreme) value in a matrix with +ve & -ve elements, adla.raghu, 2012/01/23
- Re: Abs highest(extreme) value in a matrix with +ve & -ve elements, Andy Buckle, 2012/01/23
- Re: Abs highest(extreme) value in a matrix with +ve & -ve elements, Penfold, 2012/01/23
- Re: Abs highest(extreme) value in a matrix with +ve & -ve elements, Andy Buckle, 2012/01/23
- Re: Abs highest(extreme) value in a matrix with +ve & -ve elements, adla.raghu, 2012/01/23
- Re: Abs highest(extreme) value in a matrix with +ve & -ve elements, Ben Abbott, 2012/01/23
- Re: Abs highest(extreme) value in a matrix with +ve & -ve elements, Jordi Gutiérrez Hermoso, 2012/01/23
- Re: Abs highest(extreme) value in a matrix with +ve & -ve elements, adla.raghu, 2012/01/23
- Re: Abs highest(extreme) value in a matrix with +ve & -ve elements,
Jordi Gutiérrez Hermoso <=
- Re: Abs highest(extreme) value in a matrix with +ve & -ve elements, adla.raghu, 2012/01/25
- Re: Abs highest(extreme) value in a matrix with +ve & -ve elements, adla.raghu, 2012/01/23
- Re: Abs highest(extreme) value in a matrix with +ve & -ve elements, Penfold, 2012/01/23
- Re: Abs highest(extreme) value in a matrix with +ve & -ve elements, Penfold, 2012/01/23
- Re: Abs highest(extreme) value in a matrix with +ve & -ve elements, Ben Abbott, 2012/01/23