A beginner needs help with surface by cartesian coordinate system

Hello, everyone.
I’m not a student programmer, therefore, my question may seem silly. But I need to deal with this library.
I have the coordinates of all the points and I need to build a surface, but I can’t set the surface, as in the example. The method from the example distributes x and y sequentially from 1, this does not suit me.
Studying the examples, I saw a similar situation with @jackp, called untitled (41), but I did not find the python code.