0 个投票

I plot a figure by using a function from a package.
Now I'd like to know the x and y values once I plot the curve.
Where are they stored

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Star Strider
Star Strider 2020-1-14

1 个投票

Try this:
F = openfig('untitled.fig');
ax = gca;
lines = findobj(ax, 'Type','Line');
for k = 1:numel(lines)
x{k,:} = lines(k).XData;
y{k,:} = lines(k).YData;
end
The x- and y-data for each line are in their appropriate cell arrays.

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Paul Rogers
Paul Rogers 2020-1-14
that works great,
One last thing fi you could.
I need to plot but with a diffferent x
x = -0.2:0.01:0.8;
Can you just write me a piece of code for that, please?
Something like this
for k = 1:numel(lines)
y{k,:} = lines(k).YData;
plot(FlowVector,y{k,:})
hold on
end
the x is always the same
Star Strider
Star Strider 2020-1-14
I am not certain what you intend withh ‘...plot but with a different x’
Two possibilities:
F = openfig('Puntitled.fig');
ax = gca;
lines = findobj(ax, 'Type','Line');
for k = 1:numel(lines)
x{k,:} = lines(k).XData;
y{k,:} = lines(k).YData;
end
newx = -0.2:0.01:0.8;
for k = 1:numel(lines)
newy{k,:} = interp1(x{k}, y{k}, newx, 'linear','extrap'); % Interpolate-Extrapolate
end
or:
figure
plot(newx, cell2mat(newy)) % Plot Interpolated Values
grid
figure
plot(cell2mat(x).', cell2mat(y).') % Plot Previous Data With New X-Axis Ticks
xt = get(gca, 'XTick');
set(gca, 'Xtick',xt, 'XTickLabel',newx)
grid
One of these should do what you want.
Paul Rogers
Paul Rogers 2020-1-14
for k = 1:numel(lines)
figure(4)
plot(FlowVector,y{k,:})
grid on
hold on
end
here's is the solution.
Man, thank you a lot, you really helped me.
I couldn't figured out without your help.
Star Strider
Star Strider 2020-1-14
As always, my pleasure!
That’s what I’m here for!

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