Re: Change row of matrix

us — Mon, 06 Aug 2007 06:44:05 -0400

roman.toengi:
<SNIP mat aerobatics...

one of the many solutions

     m=ones(5,4);
     nr=3;
     m(nr,:)=5;
     m(nr+1,:)=2*m(nr,:);
     m

us

Change row of matrix

=?ISO-8859-1?Q?Roman_T=F6ngi?= — Mon, 06 Aug 2007 06:39:52 -0400

I want to execute the elementary row-operation on a matrix.

Example:

A = [1 1 1;1 1 1;1 1 1]

1 1 1
1 1 1
1 1 1

e.g. I'd like to multiply the second row with 5:

A = [A(1,:);5*A(2,:);A(3,:)]

1 1 1
5 5 5
1 1 1

This doesn't serve me because I must know which row to compute in advance.
I need a command that changes elements or rows of a matrix and which
returns the whole matrix not just the changed row.

Thx

MATLAB Central Newsreader - Change row of matrix

Re: Change row of matrix

Change row of matrix