How can I extract surface plot data from MATLAB figure?

I would like to extract surface plot data from saved matlab fig. I am trying using below code

ch=openfig('latching_surfplot.fig');

ch = findobj(ch,'Type','surface');

surfl(x,y,z);

ch=get(gca,'ch');

x=get(ch,'xd');

y=get(ch,'yd');

z=get(ch,'zd');

But I am getting the following error

Undefined function or variable 'x'.

*Error in surfvslineplot

surfl(x,y,z);*

Please help.

Thanks

[Walter Roberson]

What is your intention of having a surfl() call after you just did an openfig() ?

[vasudha agrawal]

If I remove surfl(), then following error came. So, I added surfl() command.

Error message: There is no xd property on the Surface class.

Error in surfvslineplot x=get(ch,'xd');

Answer 1

[KSSV]

[X,Y,Z] = peaks(100) ;
surf(X,Y,Z)
h = gcf; %current figure handle
axesObjs = get(h, 'Children');  %axes handles
dataObjs = get(axesObjs, 'Children'); %handles to low-level graphics objects in axes
%%get data 
XX = dataObjs.XData ;
YY = dataObjs.YData ;
ZZ = dataObjs.ZData ;

[vasudha agrawal]

Thank you so much. This code is working.

[TheStranger]

In the latest version one should write:

dataObjs(2).Children.XData

just fyi