The coordinates

[Rong, Feng (NIH/NIDCD) [V]]

Hi,
I have a question about the grid coordinates calculated with prepare-leadfield.m -- how to interpret the .pos value?
For example, I run the script [grid]=prepare_leadfield(cfg,freq), with the xgrid, ygrid, and zgrid value of cfg being set as 'auto', then how can I interpret the grid.pos value? They have the value like [-9 2 2], which coordinates is it?
 
Best,
Feng Rong
Graduate Student
NACS Program / Kinesiology Dept
UMCP