How to extract data from multiple Matlab figures

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Safi ullah
Safi ullah 2017-12-4
评论： Safi ullah 2017-12-5
Hello everyone, I have extracted data from Matlab figure saved in “.fig” format by using the following code
open F1.fig %%F1.fig is the first figure
D = get(gca, 'children')
x=get(D, 'xdata');
y=get(D,'ydata');
z=get(D,'cdata');
x, y, and z are the extracted data of x,y and z components.For only one case I have total 90 figures so by using the above code for each figure take much time. Now I need to use the above code for all 90 figures and get the data at once. I tried by using for loop but it does not work. Thanks

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Walter Roberson
Walter Roberson 2017-12-4
编辑：Walter Roberson 2017-12-4
dinfo = dir('*.fig')
fignames = {dinfo.name};
numfig = length(fignames);
x = cell(numfig, 1);
y = cell(numfig, 1);
z = cell(numfig, 1);
for K = 1 : numfig
figfile = fignames{K};
try
fig = openfig(figfile);
ax = get(fig, 'CurrentAxes');
if ~isempty(ax)
D = get(ax, 'Children');
x{K} = get(D, 'XData');
y{K} = get(D, 'YData');
z{K} = get(D, 'ZData');
else
fprintf('note: file "%s" has empty current axes\n', figfile);
end
close(fig);
catch ME
fprintf('note: file "%s" could not be opened as figure\n', figfile);
end
end
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Walter Roberson
Walter Roberson 2017-12-5
That is what my code already does. It creates cell arrays, x, y, and z, each of which has one entry per figure. For figures in which there was only one axes child, the entry will be a numeric vector. For figures in which there was more than one axes child, the entry will be a cell array of numeric vectors, one entry per child.
You have a number of figures, and each figure has an unknown number of axes children, so you nested structures are to be expected.
Safi ullah
Safi ullah 2017-12-5
@ Walter Roberson thanks. Now I found it work good.

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