How to plot a circle of some radius on a polar plot, when the circle is not centered in the origen?

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Gabriel Malagon Carvajal
评论： Adam Danz 2021-6-15
eg. i want a small circle with other point as center of some radius...ON the POLAR plot
  1 个评论
Adam Danz
Adam Danz 2021-6-15
The easiest approach would be to use the rectangle function with the curvature option to make circles and to fill all of them.
Plot them in order from bottom to top with the top most circle being white.

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回答（2 个）

Gabriel Malagon Carvajal
xCenter = 12; yCenter = 10; theta = 0 : 0.01 : 2*pi; radius = 5; x = radius * cos(theta) + xCenter; y = radius * sin(theta) + yCenter; %[theta,rho] = cart2pol(x,y) [abtheta,abrho] = cart2pol(x,y); polar(abtheta,abrho,'o'); %centerDeltacurrent
Jose Marques
Jose Marques 2017-9-9
Hello Gabriel Malagon Carvajal. You can try this:
%k is a constant that you can difine as the circles size
k = 0.4 %a exemplo of a 0.4 diamater circle
theta = linspace(0,2*pi);
rho = k*sin(theta);
polarplot(theta,rho)
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Jose Marques
Jose Marques 2017-9-9
You can change the values of radius, x_center and y_center:
radius = 1;
x_center = 0.5;
y_center = 0.5;
th = 0:pi/50:2*pi;
xunit = radius * cos(th) + x;
yunit = radius * sin(th) + y;
[theta,rho] = cart2pol(xunit,yunit)
polarplot(theta,rho)

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