Get values from matlab plot

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Arpan Bhattacharya
Arpan Bhattacharya 2020-5-12
评论： Ameer Hamza 2020-5-14
I have a matlab figure with my real data and a fitted curve on that data. Can I extract the fitted values from that matlab figure?
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Geoff Hayes
Geoff Hayes 2020-5-12
Arpan - how was the fitted curve added to that plot? Which function or functions were used to create it?
Arpan Bhattacharya
Arpan Bhattacharya 2020-5-12
Hi Geoff,
Its from a matlab based software. I usedan exponential equation to fit my data. The only thing is I can save the fitted curve as matlab figure (.fig format). Is that what you are asking?

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Ameer Hamza
Ameer Hamza 2020-5-12
If it contains a single line, then you can do something like this
fig = openfig('test.fig');
Line = findobj(fig, 'type', 'line');
x = Line.XData; % x-data
y = Line.XData; % y-data
If there are multiple lines, then the variable 'Line' will be an array. In that case, you can index into 'Line' to get data for a specific line. For example
x = Line(2).XData; % x-data
y = Line(2).XData; % y-data
this code access the 2nd line in array 'Line'
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Arpan Bhattacharya
Arpan Bhattacharya 2020-5-14
Thanks. I got this working.

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