how can i apply 1 of k coding scheme on 2D MATRIX

the order of matrix can be any number except 1.

[KSSV]

What is 1 of k coding scheme?

[GHUFRAN AHMAD KHAN]

the sum of each row should be 1 and each entry should be 0 or 1 is called 1 of k coding scheme and below are one question solution.

>> C = [1,1,2,3,1,3,2];

>> R = 1:numel(C);

>> A = zeros(numel(C),max(C));

>> A(sub2ind(size(A),R,C)) = 1

A = 1 0 0; 1 0 0; 0 1 0; 0 0 1; 1 0 0; 0 0 1; 0 1 0

[Rik]

So you already have working code? Then what is your question?

Answer 1

[Andrei Bobrov]

C = randi([1,3],2,4)

[m,n] = size(C);
k = max(C(:));
out = zeros(n,k,m);
[ii,kk] = ndgrid(1:m,1:n);
out(sub2ind([n,k,m],kk(:),C(:),ii(:))) = 1

[GHUFRAN AHMAD KHAN]

will it work when the order of matrix is large? i try to implement this code for 200x150 order matrix.

[Andrei Bobrov]

Try it and report the result.

[GHUFRAN AHMAD KHAN]

i try this code on matrix of order 200x150 uint8 and it is showing out of range subscript.

[Andrei Bobrov]

use

C = A + 1;

[m,n] = size(C);
k = max(C(:));
out = zeros(n,k,m);
[ii,kk] = ndgrid(1:m,1:n);
out(sub2ind([n,k,m],kk(:),C(:),ii(:))) = 1;

[GHUFRAN AHMAD KHAN]

here this message is showing when i am seeing the value of the out variable.

_ Cannot display summaries of variables with more than 524288 elements._