Turn pixels in connected components to zero based on logical array

I want to switch all pixels in connected components to zero, based on a logical array.

I have CC.PixelIdxList obtained from bwconncomp performed on binary image BW.

I have a logical array, X, the size of CC.PixelIdxList, based on which I would like to turn pixels in CC.PixelIdxList{y} to zero if the value in X=0 at index y.

I tried this:

BW(CC.PixelIdxList{y}) =X; 

where y is just an array of numbers from 1 to the size of CC.PixelIdxList.

But it is not working, there must be another way that I cant think of.

Appreciate any suggestions. Thanks.

Answer 1

[Walter Roberson]

BW(CC.PixelIdxList{y}(~X)) = 0;