how can I choose points from the surface of a circle? how can I subtract each element of a matrix from the other elements of the same matrix?
MATLAB: Charge simulation method
functionloopsmatrix
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Use the FAQ to draw a circle, then exponentiate:
xCenter = 12;yCenter = 10;theta = 0 : 0.01 : 2*pi;radius = 5;x = radius * cos(theta) + xCenter;y = radius * sin(theta) + yCenter;xe = exp(x);ye = exp(y);loglog(xe, ye, 'LineWidth', 2);axis square;grid on;hold on;% Draw second circle
radius = 3;x = radius * cos(theta) + xCenter;y = radius * sin(theta) + yCenter;xe = exp(x);ye = exp(y);loglog(xe, ye, 'LineWidth', 2);
How are you drawing your circles?
However you are trying to draw it you'll probably end up having x and y points representing the 2 circles.
xCenter1 = 7;yCenter1 = 7;xCenter2 = 12;yCenter2 = 10;theta = 0 : 0.01 : 2*pi;radius1 = 5;radius2 = 6;%generate 2 circles with parameters above.
x1 = radius1 * cos(theta) + xCenter; y1 = radius1 * sin(theta) + yCenter;x2 = radius2 * cos(theta) + xCenter2;y2 = radius2 * sin(theta) + yCenter2;%%find distance from each circle center to the other circle's infringing points.
dC1 = sqrt((x2-xCenter1).^2+(y2-yCenter1).^2)>=radius1;dC2 = sqrt((x1-xCenter2).^2+(y1-yCenter2).^2)>=radius2;plot(x1(dC2), y1(dC2),'b.',x2(dC1),y2(dC1),'r.');axis square;xlim([0 20]);ylim([0 20]);grid on;Looking at your sample picture it is easy to see that the infringing portion of circle 2 into circle 1 are points that are within the radius of circle 1. (vice versa for circle 2) With this we can calculate the distance of all points of circle 2 to the center of circle 1 and compare it to the radius.
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