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

I have a long set of coordinate points say (666624x2) 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

Answer 1

[Akira Agata]

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)