how to obtain some data from this figure

I do not have good experience in matlab and want to know how can I extract features from the attached figure and create feature vector. I have the data and I plot them as shown in the figure. My experiment is to extract gait signal from a person walking style.

I appreciate your help thank you

[Star Strider]

Do you have an actual figure .fig file of it, or only the .jpg you posted? With a .fig it’s fairly straightforward. With a .jpg, it’s very much less so.

[kanan]

Yes, I'm attaching it here. Thank you

Answer 1

[Star Strider]

Here you go:

F = openfig('gait.normal.fig');
L = findobj(gca, 'Type', 'line');
XD = get(L, 'XData');
YD = get(L, 'YData');

The ‘XD’ and ‘YD’ are the ‘x’ and ‘y’ data from the plot, respectively. They are both (1x3371) vectors.

[kanan]

thank you for your help

[Star Strider]

My pleasure.