Search and select points form each quadrant
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Hello
How to select two or any number of nearest points from each quadrant?
I have point T and I want to select only two nearest points from each quadrant. 
回答（1 个）
darova
2020-3-18
You can use pdist2 for this purpose
D = pdist2([xt yt],[x(:) y(:)]);
ix = D < 1;
plot(x(ix),y(ix),'or')
hold on
plot(x,y,'.b')
hold off
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