How to replace all elements of matrix with zero except some elements(localpeaks?

Hello,I have a matrix of data with size 1*256. I found local peaks using [pks loc]=findpeaks(hh2) ;now in my matrix i want to put zero instead of all elements except peaks that i found.can any one help me plz?

Answer 1

[Christopher Davis]

I would try something like this:

 x=1:length(hh2);
 x(loc)=[];
 hh2(x)=0;

[Fateme Jalali]

thank you