is anyone know, how to know the matrix coordinate..?

is anyone know, how to know the matrix coordinate..?

a = [1 1 0; 0 0 0; 0 0 1;];

1 have coordinate on, (1,1) (1,2) and (3,3)

how to know the matrix coordinate..?

Answer 1

[Wayne King]

a = [1 1 0; 0 0 0; 0 0 1;];
idx = find(a==1);  % linear coordinates
[I,J] = ind2sub(size(a),idx);

The I,J pairs are the "matrix coordinates"

Answer 2

[Azzi Abdelmalek]

In your case, you have only 1 and 0

a = [1 1 0; 0 0 0; 0 0 1;];  
[ii,jj]=find(a)

Answer 3

[nu]

very thank you @wayne king and @azzi abdelmalek for your answer, that was very help me:)