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How do I connect plot points with lines using ginput?

Asked by Glenn Martinez on 29 Feb 2016
Latest activity Edited by Image Analyst
on 29 Feb 2016
I am trying to program a function called draw_constellation. By using ginput,the user would click on the figure and a plot point will appear. Any subsequent plot points would be connected with a line. My problem is connecting the third point with the second point and so on. Currently, the code I have only plots the first two points with a line.
Here is what I currently have:
function[] = draw_constellations
axis([0 100 0 100]);
set(gcf,'color','k');
set(gca,'color','k');
axis square;
hold on;
while 1
[x,y,button] = ginput(1);
if button == 113
break;
else
hold on
plot(x,y,'w*')
end
[xn,yn,button] = ginput(1);
plot(xn,yn,'w*');
plot([x,xn],[y,yn],'w');
end

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1 Answer

Answer by David Young
on 29 Feb 2016
 Accepted Answer

The attached function should show you how to do what you need, though you will have to modify it for your purpose.

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