Matlab - How to create logical array matrix without looping -

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• creating indicator matrix 5 answers

i want following:

y = [1; 2; 3]; x = repmat(1:10, 3, 1); i=1:3     x(i,:) = x(i,:) == y(i); end 

so end

x =       1     0     0     0     0     0     0     0     0     0      0     1     0     0     0     0     0     0     0     0      0     0     1     0     0     0     0     0     0     0 

is there way without looping?

if start 1:10 vector, using bsxfun:

y = [1; 2; 3]; x = bsxfun(@eq, y, 1:10); 

otherwise repmat:

y = [1; 2; 3]; x = repmat(1:10, 3, 1); x = repmat(y, 1, size(x,2)) == x; 

(or ones suggested leo.)