How to extract data from a pcolor figure?

Hi all,

It's been a while that I'm struggling to extract data from a figure. I have the .fig file which contains x,y and z data in a pcolor shape. However, I don't have the data and I would like to collect it. I tried the following script:

hfig = openfig('myfig');
H = findobj(hfig,'type','surface');
x_data = get(H,'xdata');
y_data = get(H,'ydata');
z_data = get(H,'zdata');

I get the correct x and y data in the shape of a meshgrid. However, the zdata gives only 0 values. I guess the problem essentially comes from the 'type' of plot that I define as 'surface'. Any tip on it?

Answer 1

[Walter Roberson]

pcolor sets all of the ZData to 0. The color information is in the CData property.

[FChauv]

Smart, I did not think of it. Thank you very much!