Plotting circle using angle and radius

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Robin Szabo 2018 年 11 月 7 日

I have some code in which I have generated a set of radii and their corresponding angles and I need to plot these as a circle. Unfortunately it creates half the circle twice and I can't find a way to plot the left (negative) side of the circle.
The picture below shows what matlab plots. I decreased the resolution to make it more blocky and so there's definitely two lines however they are both in the positive part of the circle. サインインしてコメントする。

回答 (1 件)

Aquatris 2018 年 11 月 7 日
Next time, share your code so that we can debug your code. My guess is you angle are from +90 degrees to -90 degrees instead of 0 to 360 degrees.
Here is a simple circle code;
q = 0:0.01:2*pi; % angle 0 to 360 degrees in radian
x = r*cos(q); % cartesian x coordinate
y = r*sin(q); % cartesian y coordinate
plot(x,y)

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R2018b

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