Help me with my iteration in gui ? for number number of dots detected every snapshot

I'm counting number of dots in every snapshot of the camera in the GUI.. if 2nd snapshot takes how do I transfer the present result to the previous result using iteration or any method? anyone can suggest?

B = im2bw(imfilter(G, fspecial('gaussian', sigma*3, sigma), 'replicate'), thres);
Bl = bwlabel(B);
Neggs = max(Bl(:))

[B1, presentdots] = bwlabel(B);
% Now that we have presentdots, put up info into a label on the GUI.
presentLabel = sprintf('%d', presentdots);
set(handles.pres, 'String', presentLabel);

[Jan]

I do not understand what you are asking for.

[Walter Roberson]

The solution has already been given in others of the duplicate threads that are going on this topic. (I don't have time to hunt and merge them at the moment.)

[Image Analyst]

Yes, why are there 5 threads on this same question? http://www.mathworks.com/matlabcentral/answers/contributors/4036894-michael-longard/questions

[Jan]

@michael Longard: Obviously something is going wrong. One of your question is closed, and some others, who have been able to understand the contents of your question, calssify your questions as duplicate threads.