MATLAB: Drawing a segment of a circle

Question

I would like to draw a segment of a circle (like a slice of a pizza) but cannot find an easy way to do it.

I am currently drawing triangles using fill function but ideally I need one side of the triangle to be curved. Is there a way to specify a curvature of a line? Thanks B

Answer 1

There are several files in the File Exchange that will do what you want. Here is one:

http://www.mathworks.com/matlabcentral/fileexchange/25580-ellipse

Also, here is a simple function that could be modified to draw just a segment:

function h = circle(x,y,r,nsegments)  
if nargin<4
    nsegments=50;
end
hold on
th = 0:2*pi/nsegments:2*pi;
xunit = r * cos(th) + x;
yunit = r * sin(th) + y;
h = plot(xunit, yunit);
hold off
end