Re: Mask the matrix

[James Sherman Jr.]

I'd so something like:

c = all(a~=0,1);
d = a([c;c]);
b = reshape(d, 2, []);

I think this will do what you want.

On Tue, May 12, 2009 at 10:35 AM, Xin Dong <address@hidden> wrote:

Hi,

I have a program that generates a two row matrix with zero elements. I wanna extract out the columns with elements in both rows are non-zero. For example, if the matrix is

a = [ 1 0 2 3 4; 2 1 0 0 4],

I wanna get

b = [1 4; 2 4].

How can I use octave to do this?

Thanks,
Xin

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