How can I extract curve data from a .FIG file?

I have 10 .FIG files plotted using the segment below.

yyaxis left
plot(50:450, V1 * 10^6, 'r')
xlabel('Frequency (Hz)')
ylabel('S')
yyaxis right
plot(50:450, V2 * 10^6, '--r')
ylim([0 10])
ylabel('SS')
xlim([50 250])
ax = gca;
ax.YAxis(1).Color = 'k';
ax.YAxis(2).Color = 'k';

I want to take the **first curve from each figure & plot them on one figure.

% **The first curve is the yyaxis left portion (from above).
plot(50:450, V1 * 10^6, 'r')
xlabel('Frequency (Hz)')
ylabel('S')

Is there a way I can accomplish that? If so, could you outline the method or point me in the right direction with the documentation?

Thank you.

Answer 1

[Tommy]

You could use findobj() on each figure to find the handles of the two lines. You can differentiate the lines by their LineStyles (maybe there's a better way to distinguish the two lines, but I couldn't come up with it). All together, something like this:

% for final product:
f = figure; ax = axes(f, 'NextPlot', 'add');

filenames = {'file1.fig', 'file2.fig', ..};
for i = 1:numel(filenames)
    f1 = openfig(filenames{i}); % load the old figure
    lh = findobj(f1, 'Type', 'Line', 'LineStyle', '-'); % find the line with '-' linestyle
    copyobj(lh, ax); % copy that line to your new axes
    delete(f1); % delete the old figure
end