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Math Forum » Discussions » Software » comp.soft-sys.matlab

Topic: How to extract data points from a plot (can't use 'ginput')
Replies: 6   Last Post: Jan 31, 2013 5:26 AM

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Forrest

Posts: 18
Registered: 8/25/08
Re: How to extract data points from a plot (can't use 'ginput')
Posted: Aug 25, 2008 1:17 PM
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Thanks Steve. I just figured it out. Below is what I did
for those (like me) who are not very Matlab savy.

First you must open the figure.

openfig('fig1.fig'); %opens the figure

h = findobj(gca, 'Type', 'line'); %gca gets 'handle'
%of the open figure
%h now has a value of 160.0106, not sure why but don't care

get(h) %displays a list of all the 'tags', one of
%which is XData and YData, which contain the
%plot data

X = get(h, 'XData');
Y = get(h, 'YData');

Done!

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