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Can someone advise how to draw a circle in Matlab

Posted on 2009-04-07
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Last Modified: 2016-02-10
Please find the attached code

I want to draw a circle of 1 meter radius at f1 and a 11 meter at f2

I have tried to search in the help files but can't figure it out...

your help would be really appreciated.
clear % all variables
figure(1), hold off
set(gca,'FontSize',14) % adjust fontsize
 
 
 
Line1X=[-10,10];
Line1Y=[-10,-10];
Line2X=[10,0];
Line2Y=[-10,10];
Line3X=[-10,0];
Line3Y=[-10,10];
line(Line1X,Line1Y)
line(Line2X,Line2Y)
line(Line3X,Line3Y)
text(-10,-10,'\leftarrow f1 (x1,y1)','VerticalAlignment','middle','HorizontalAlignment','left')
text(10,-10,'\leftarrow f2 (x2,y2)','VerticalAlignment','middle','HorizontalAlignment','left')
text(0,10,'\leftarrow f3 (x3,y3)','VerticalAlignment','middle','HorizontalAlignment','left')

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Question by:jtiernan2008
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Expert Comment

by:yuk99
ID: 24089457
Use CIRCLE function from Matlab file exchange:
http://www.mathworks.com/matlabcentral/fileexchange/2876

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Accepted Solution

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yuk99 earned 2000 total points
ID: 24089518
This is an example how to use CIRCLE function:
center=[0,0];
radius=5;
N=100; % number of points (circle resolution)
H=circle(center,radius,N,'r-');

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by:jtiernan2008
ID: 24089728
thanks for your response...

I get an error
??? Undefined function or method 'circle' for input arguments of type 'double'.

Error in ==> triangle at 23
H=circle(center,radius,N,'r-');
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Author Comment

by:jtiernan2008
ID: 24089752
ah wait I see I am to download from the link above :)
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Author Closing Comment

by:jtiernan2008
ID: 31567605
thanks a million
that's really useful
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