export x and y data from a matlab plot into a matrix

how do I extract the x y data from a matlab figure? Thank you.

Answer 1

[Honglei Chen]

You need to access XData and YData property, for example:

h = plot(1:10);
get(h,'XData')
get(h,'YData')

Here is a handy tool to find out the handle graphics properties

http://www.mathworks.com/help/techdoc/infotool/hgprop/doc_frame.html

[Baba]

What if I don't have access to h? and just have a plot in front of me that pops up due to some code running?

Answer 2

[Image Analyst]

If it just recently popped up, and you can run some code to get to it before focus switches to some other figure, then you can use gca or gcf for the handle.

Answer 3

[Patrick Kalita]

Follow the steps outlined in this solution: How to extract data from MATLAB figure files?.

Also, take a look at the answers to these similar questions:

<http://www.mathworks.com/matlabcentral/answers/17025-extract-time-series-data-from-figure>

<http://www.mathworks.com/matlabcentral/answers/2951-extracting-data-series-from-fig-file>