extract data from MATLAB figures
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Dear friends
I have a figure in matlab and want to exract the data from it, I have a code which I have used it several time before for other figures, while it does not work for this figure. would you please advice me to handel the error?
I have attached the figure, and below is the code:
open('2.fig');
h = gcf; %current figure handle
axesObjs = get(h, 'Children'); %axes handles
dataObjs = get(axesObjs, 'Children'); %handles t
xdata = get(dataObjs, 'XData');
ydata = get(dataObjs, 'YData');
1 Comment
Bjorn Gustavsson
on 31 Jan 2019
Are you completely sure that the dataObjs have fields 'XData' and 'Ydata'? In my experience that is not guaranteed to be the case, when trying to do this I've sooner or later have had to do it step-wise and rather manually - just to find what children to get the data from. Not the greatest news for you if this will force you to doodle this step manually for a larger number of figures. Perhaps you can get somewhere by looping over all dataObjs and check which has the right XData and YData.
HTH
Answers (2)
Walter Roberson
on 31 Jan 2019
Change
axesObjs = get(h, 'Children'); %axes handles
to
axesObjs = findobj(h, 'type', 'axes');
The legend object that you are getting as a child of the figure does not have any children with Xdata and YData, and that is interfering with the get() you are doing.
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