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 2017-9-9

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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

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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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Gabriel Malagon Carvajal 2017-9-9

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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

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Jose Marques 2017-9-9

Did not work, Gabriel?

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Jose Marques 2017-9-9

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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 2017-9-9

在 MATLAB Online 中打开

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)