extracting data series from *.fig file

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Hi there,
I have a figure file, but not the original data.
Is there a way to extract the data array from the 2D plot, opened from *.fig file?
Thanks in advance,
Petr.
  1 Comment
shubham kumar gupta
shubham kumar gupta on 10 Sep 2022
many a time it may happen you really get confused by varying answers non of them working
So follow this
S = load('MyFigure.fig', '-mat');
Now open S and go to children -> children -> Properties
Now search for CData, or XData, YData & ZData
you can export these variables

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Accepted Answer

Paulo Silva
Paulo Silva on 10 Mar 2011
open data.fig %open your fig file, data is the name I gave to my file
D=get(gca,'Children'); %get the handle of the line object
XData=get(D,'XData'); %get the x data
YData=get(D,'YData'); %get the y data
Data=[XData' YData']; %join the x and y data on one array nx2
%Data=[XData;YData]; %join the x and y data on one array 2xn
  3 Comments
Omar Velazquez
Omar Velazquez on 25 Mar 2020
@Paulo Silva - You have saved my life. Many thanks

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More Answers (3)

Petr
Petr on 10 Mar 2011
Edited: Walter Roberson on 19 Sep 2015
err.. tried it, it tells me
>> D=get(gca,'Children');
>> XData=get(D,'XData');
??? Error using ==> get
Invalid property found.
Object Name : hggroup
Property Name : 'XData'.
It's MATLAB 7.10.0 (R2010a)
  4 Comments
Walter Roberson
Walter Roberson on 19 Sep 2015
hfig = openfig(figureFile);
d = findall(hfig, '-property', 'xdata');
xydatas = arrayfun(@(h) get(h, {'xdata','ydata', 'type'}), d, 'Uniform', 0);
Now xydatas will be a cell array with one entry for each object in the plot that has an xdata property. Each of the cells will have three elements: the xdata information, the ydata information, and the name of the type of the object. Different kinds of objects might be included, depending on what was drawn in the plot.
The original question is not precise about what kind of 2D plot is present. For example, lines, surfaces, patches, and scatter plots are all 2D plots that have xdata properties.

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Petr
Petr on 10 Mar 2011
Thanks, it works!
Probably, something was wrong with my file.
  1 Comment
Walter Roberson
Walter Roberson on 10 Mar 2011
Probably not, hggroup are not uncommon for some kinds of plots. In future you could use findobj() to locate the objects that have xdata.

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shubham kumar gupta
shubham kumar gupta on 10 Sep 2022

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