## Plotting circle using angle and radius

Robin Szabo

### Robin Szabo (view profile)

さんによって質問されました 2018 年 11 月 7 日

### Aquatris (view profile)

さんによって 回答されました 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. #### 0 件のコメント

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R2018b

## 1 件の回答

### Aquatris (view profile)

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
r = 10; % radius
x = r*cos(q); % cartesian x coordinate
y = r*sin(q); % cartesian y coordinate
plot(x,y)

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