www.gusucode.com > graphics 案例源码程序 matlab代码 > graphics/PlotCircleExample.m

    %% Plot Circle
% Plot a circle centered at the point (4,3) with a radius equal to 2. Use 
% |axis equal| to use equal data units along each coordinate direction.

% Copyright 2015 The MathWorks, Inc.


r = 2;
xc = 4;
yc = 3;

theta = linspace(0,2*pi);
x = r*cos(theta) + xc;
y = r*sin(theta) + yc;
plot(x,y)
axis equal