MATLAB: Separate two groups of coordinate points array where one group of coordinate points are given?.

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I have a long set of coordinate points say (666624×2) of two groups (A, B). One group (say A) of coordinate points are given (5900 x 2). I have to split two group (A, B). How can I find the other group using the given group?.
Thanks

Best Answer

You can utilize ismember function, like:
dataAll = rand(100,2);              % List of all coordinate points
dataA = dataAll(dataAll(:,1)>0.5,:);% Group A (part of dataAll)
idx = ismember(dataAll,dataA);
idx = all(idx,2);
dataB = dataAll(~idx,:);            % Group B (part of dataAll)
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