how to get coordinates of a marker

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Habtamu Tesfaw 2020-6-25

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https://ww2.mathworks.cn/matlabcentral/answers/554548-how-to-get-coordinates-of-a-marker

评论： Habtamu Tesfaw 2020-6-25

How can I get the x and y coordinates of the points on the circle. the center of the circle is at (346,278). I ploted the circle using the following command.

plot(346,278,'Marker','o','color','k','Markersize',20).

Thank you for your help

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KSSV 2020-6-25

在 MATLAB Online 中打开

Already you have the coordinates in hand right?

(346, 278)

Habtamu Tesfaw 2020-6-25

this one is the ceneter of the circle. I want the coordinate values on the circle. The circle is not ploted using inhand data. the circle can be ploted using 'marker size' command of matlab, given its center.

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采纳的回答

KSSV 2020-6-25

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You can plot your required circle given center and radius using the below method.

C = [346 278] ;  % Center of the circle 
R = 0.5 ;   % Radius 
th = linspace(0,2*pi) ; 
x = C(1)+R*cos(th) ; 
y = C(2)+R*sin(th) ; 

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Habtamu Tesfaw 2020-6-25

Thank you so much!

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MATLAB Graphics 2-D and 3-D Plots Surfaces, Volumes, and Polygons Surface and Mesh Plots

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