How to repeat rows of a matrix n times when n varies with each row?

I have obtained counts corresponding to the number of times each row of a matrix A (of size 14000 x 5) occurs. I obtained these counts using

[u, ia, ic]=unique(A,'rows'); C=[u histc(ic,1:length(u))];

Now I want to match the counts i.e histc(ic,1:length(u)) to each row of A, I tried to do the following

CC=zeros(length(A),6); for i=1:length(C) CC(i,:)=repmat(C(i,:),C(i,6),1); end

It works fine for the first 17 instances where C(i,6)=1, but then as soon as I have more than one i.e. C(i,6)=2 etc. Matlab gives me the following error

Subscripted assignment dimension mismatch. Error in CC(i,:)=repmat(C(i,:),C(i,6),1);

I also realize that with length(CC)>length(C) I will have an issue filling out the matrix.

How can I do this? Many thanks IC

Answer 1

[Andrei Bobrov]

CC=zeros(size(A,1),6);
i2 = cumsum(C(:,6));
i1 = i2 - C(:,6) + 1;
for ii=1:size(C,1)
    CC(i1(ii):i2(ii),:)=repmat(C(ii,:),C(ii,6),1);
end

or

n = cumsum(C(:,6)); 
i1 = n - C(:,6) + 1;
idx = zeros(n(end),1);
idx(i1) = 1;
CC = C(cumsum(idx),:);

Answer 2

[Ingrid]

Both are perfect. Thanks