sorry, Thomas is correct. It is x,y,z first, followed by nx, ny, nz. Bruce
On Wed, 26 Jun 2002, Thomas Witzel wrote: > On Wednesday 26 June 2002 10:29 pm, Darren Weber wrote: > > Dear Bruce et al, > > > > tksurfer now provides access to tools such as 'write dipoles'. > > > > The output file has 6 fields per vertex (dipole). > > > > What are these fields? Are they X,Y,Z and spherical equivalents or XYZ and > > some dipole size, orientation information? What is the coordinate system > > of the XYZ etc? > They are the 3 coordinates (x,y,z) followed by the normal vector (nx,ny,nz) at > this location. The coordinate system is the same as the surface's. We use > those source locations and orientations for the computation of forward models > and later to paint the inverse solutions on the surface. Make sure you create > these source locations on a folded surface (preferrably white), since > modelling sources on an inflated surface will not give you locations that > correspond with reality. > > Thomas Witzel > >
