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How to plot a disc with a given center c and radius r

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Mourchid
Mourchid 2016-1-6
回答： Image Analyst 2016-1-7
Hi friends,
how can i draw a disc which is centered at (x0,y0), which has radius r and which is filled by color c, the circle should be colored in black.

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jgg
jgg 2016-1-6
编辑：jgg 2016-1-6
You can use this answer:
http://www.mathworks.com/matlabcentral/answers/98665-how-do-i-plot-a-circle-with-a-given-radius-and-center
But instead of using h = plot(xunit, yunit); use h=fill(xunit,yunit,'k') instead.
The colour c is black 'k' above, but you can change it with a colour spec like this.

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Image Analyst
Image Analyst 2016-1-7
Circles, discs, ellipses, arcs, etc. are all covered by the FAQ. See code samples in the FAQ: http://matlab.wikia.com/wiki/FAQ#How_do_I_create_a_circle.3F

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