how can I get the data points of a wave generated when an expression in an m-file was executed?

I executed an m-file containing an expression, part of my outputs was a plot. I now want to reversely read the data points from that plot. How can I do this?

[Bob Thompson]

Is this what you're looking for:

How do I extract data from MATLAB figures? - MATLAB Answers - MATLAB Central (mathworks.com)

[Mathieu NOE]

If you could generate a plot, somewhere the data where also generated ... so why now use that ?

[Adeoti Adediran]

I also thought that the data had to be somewhere but when I checked the workspace for the varaible being plotted I saw that it remained an expression after the file had executed. I checked the information for the abscissas (x axis) it was an array of 11 variables. I just need its corresponding y axis from the expression but not in a plotted form. I wish I had a syntax to ask it of the plotted wave. Hope to hear from someone about a solution.

[Mathieu NOE]

Hi

and did you try @Bob Thompson suggestion ? this should do the job in any case