how can i draw a circle useing patch function?

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Ameen salamy
Ameen salamy 2016-4-4
回答： Chad Greene 2016-4-4
how can i use patch funtion to draw a circle or ellipse

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回答（2 个）

Star Strider
Star Strider 2016-4-4
This works:
t = linspace(0, 2*pi);
r = 1;
x = r*cos(t);
y = r*sin(t);
figure(1)
patch(x, y, 'g')
axis equal
The code for an ellipse would be the same, except that there would be different values of ‘r’ for the ‘x’ and ‘y’ calculations.
Chad Greene
Chad Greene 2016-4-4
You can use circles to do it.

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