How to plot x-y coordinates which correspond to elements which are repeated at least once

Kshitij Singh answered . 2025-07-09 14:12:57

A = 1040x3 array
[r,c] = size(A);
[tags, iA,ic] = unique(A(:,1)); % rats that have been captured
t = 1:r;  % scale time as needed.
rat2 = setdiff(tags,iA); % rats that have been captured more than once
colr = ['b','g','r','m','c','k'];  % identify rats with different colors
figure;
for i=1:length(rat2)
   ind = A(:,1)==A(rat2(i),1);  % pick all the rat locs for rat i
   plot3(t(ind),A(ind,2),A(ind,3),colr(i));  % plot rat i trajectory 
   hold on;
end
grid on;

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