Set indexes not in list to zero.

I have a large vector d and a list of indices k where k<d. I wish to set points in d that are not in the list k to zero. I can achieve this with the following code.

d2=zeros(length(d),1);
d2(k)=d(k);

However, creating a new vector causes memory problems because of the size of d. Is there a way to achieve this without creating a new vector?

Answer 1

[Azzi Abdelmalek]

d(setdiff(1:numel(d),k))=0