Mesh space vs. voxel space problem

Paul Czienskowski paul_c at GMX.DE
Wed Aug 18 10:10:54 CEST 2010

  Dear fieldtrippers,

when looking at the points of the mesh generated  for the BEM generation
there was something I stumbled over: There are points with negative
coordinates, so the mesh seems to be generated in some other space than
the voxel system (maybe just translated in some way?). This wouldn't be
a great problem if the ft_dipolefitting wasn't working in voxel but in
mesh space, because when searching the valid dipole positions in
prepare_dipole_grid on lines 432-434 the bounding_mesh function returns
a volume full of zeros since the grid positions don't lie within the
volume. I'm using the 20100612 version of fieldtrip and running
ft_dipolefitting with automatic grid generation. Is  there anything I
can do about this besides creating the grid on my own?

Thanks in advance,

Paul Czienskowski
Max Planck institute for human development
Björnsonstr. 25
12163 Berlin

Tel.: (+49)(0)30/221609359
Handy: (+49)(0)1788378772

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