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why won't Matlab plot anything?

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saeed alkaabi
saeed alkaabi 2023-6-13
编辑： Walter Roberson 2023-6-13
thetaP=linspace(0, 2*pi);
plot(R1*cos(thetaP), R1*sin(thetaP), '-b', ...
R2*cos(thetaP), R2*sin(thetaP), '-r')
when R1 and R2 are defined

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回答（1 个）

Kojiro Saito
Kojiro Saito 2023-6-13
Ran in:
Your code works fine.
R1=5;
R2=7;
thetaP=linspace(0, 2*pi);
plot(R1*cos(thetaP), R1*sin(thetaP), '-b', ...
R2*cos(thetaP), R2*sin(thetaP), '-r')
Possibly, figure is being off. Please try adding figure before plot.
figure;
plot(R1*cos(thetaP), R1*sin(thetaP), '-b', ...
R2*cos(thetaP), R2*sin(thetaP), '-r')

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