Identification of overlapping points

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Mariam Shahab
Mariam Shahab 2022-8-18
回答： Image Analyst 2022-8-18
Hi all,
I have the following code.
hold on
for r=10:5:24 % r is radius
circles(r,17,12); % using circles function
for i=1:1:20;
for j=1:1:20;
if mod(i,2)==1; % even case
if mod(j,2)==1; % odd case
plot(i,j, 'bo');
elseif mod(i,2)==0;
elseif mod(j,2)==0;
plot(i,j,"ro");
else
end
end
end
end
end
hold off
I have attached an image of the plot.
I want only the small circles (red and blue points) overlapping with the larger circles to appear. Any advice on how this can be achived. Many thanks.
Below is the circles function code.
function [x, y] = circles(r,Cx,Cy)
theta=linspace(0,2*pi,200);
x=r*cos(theta)+Cx;
y=r*sin(theta)+Cy;
plot(x,y)
end

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采纳的回答

Image Analyst
Image Analyst 2022-8-18
I'd try pdist2 to see when the centers of the small circles are within their radius of any of the points on the larger circles.

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