How can I hot one encode in Matlab? [duplicate]

Answer 1

Just in case someone is looking for the 2D case (as I was):

X = [2 1; ...
     3 3; ...
     2 4]
Y = zeros(3,2,4)
for i = 1:4
    Y(:,:,i) = ind2sub(X,X==i)
end

gives a one-hot encoded matrix along the 3rd dimension.