Get a point from a graph
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Ean Soo
on 15 Feb 2011
Commented: Nasiru Umar Bagudu
on 5 Feb 2022
Hie guys, I have done a GUI to plot a graph. Now i would like to get the calue from the graph. Lets say i plot(x,y). I would like to get the value out, for example when x=4, what is the value of y. I know there is a datacursormode, but it only show me the value in the graph. In this case, i would like to get the value in the command window.
Thanks Ean
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Accepted Answer
Paulo Silva
on 15 Feb 2011
You can retrieve the plotted data, for example:
XData=get(get(gca,'children'),'XData');
YData=get(get(gca,'children'),'YData');
Now if you want to know the y value when x=4 just do
YData(XData==4)
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More Answers (1)
Walter Roberson
on 15 Feb 2011
You can use a custom datacursormode callback that includes display() in its code.
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