Finding the position within a matrix

Hi,

I have many clusters of zeros surrounded by ones in my binary matrix. How can I find the position of the clusters of zeros without returning positions of every single zero in the cluster. I just need the position of one zero within each of the clusters.

Thanks for your help.

Adelaide:)

[per isakson]

did you search for cluster in the file exchange?

[Adelaide]

Yes, but I am hoping to find something that is much simpler. The examples I found in file exchange were more complicated than I need. Basically, I have groups of 0s in my matrix that I want to find the position of and I am hoping there is an easy to follow way of doing so.

Answer 1

[Andrei Bobrov]

eg

A = [...
     1     1     1     1     1     1     1     1     1     1
     1     0     0     1     1     1     0     0     1     1
     1     0     0     0     1     1     1     0     0     1
     1     1     0     1     1     1     1     0     0     1
     1     1     1     1     1     1     1     0     0     0
     1     1     1     1     0     0     1     1     1     1
     1     0     1     1     0     0     1     1     1     1
     1     0     1     0     0     1     1     1     0     1
     1     1     1     0     0     1     0     1     0     1
     1     1     1     1     1     1     1     1     1     1];

STATS = regionprops(~A, 'Centroid' , 'PixelList' )