Context of user fortran functions
 

Hello!

I need calculate integral of temperature between iterations... But, I don't know wich method I should use for it...

User fortran Functions USER_GETVAR, GET_INFO.... as I think, operate only with context point( location)... But, I need calculate integral for different sections ( z=0..0,1..10 for exmaple) that not defined, as locator...

And I need calculate energy source in point by temperature distribution around this point, but user fortran functions call in point context...

Please, give me advice... or exmaples, or links, or good information about User Fortran! Thanks!