Linear equation of circle

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ANDREAS KOUNTOURIS
ANDREAS KOUNTOURIS 2022-2-12
评论： ANDREAS KOUNTOURIS 2022-2-15
Hello, consider having a general equation of circle like x^2+y^2=r^2.
A way to linear the circle is to "cut the circle into horizintal or vertical slices". Any idea how could I transfer this idea in matlab equations?
Thank you.
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DGM
DGM 2022-2-12
编辑：DGM 2022-2-12
How do you propose to make a circle out of a straight line? Are you asking how to create a polygon? Or to create a series of parallel lines?
Voss
Voss 2022-2-12
Ran in:
Plotting in polar coordinates would allow you to plot a circle while avoiding non-linear terms:
t = 0:0.01:2*pi;
polarplot(t,ones(size(t)),'LineWidth',2);

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DGM
DGM 2022-2-12
编辑：DGM 2022-2-12
Ran in:
You mean like this?
r = 1;
y = linspace(-r,r,50);
xr = sqrt(r^2 - y.^2);
xl = -sqrt(r^2 - y.^2);
plot([xr; xl],[y; y])
And I suppose you could rotate it if you wanted
r = 1;
t = 30;
y = linspace(-r,r,50);
xr = sqrt(r^2 - y.^2);
xl = -sqrt(r^2 - y.^2);
[th rh] = cart2pol([xr; xl],[y; y]);
[xx yy] = pol2cart(th+t*pi/180,rh);
plot(xx,yy)

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