Hi,
I'm trying to paint functional data onto a cortical "midgray" surface. The surface was generated using mris_expand to expand the WM surface to 50% of the pial surface.
The data I want to paint onto this surface is in a 96 x 96 x 17 x 512 dimension NIFTI file generated using the feat command (the volume is the resulting "filtered_func_data.nii.gz"). When using this command:
mri_vol2surf --mov filtered_func_data.nii.gz \ --reg register.dat \ --hemi rh \ --surf midgray.05 \ --nvox NonZero_voxels.txt \ --out Total_TimeSeries_RHsurface.nii.gz
I get the following error message:
NIFTI FORMAT WARNING: ncols 65938 in input exceeds 32768. So I'm going to put the true ncols in glmin and set dim[1]=-1. This should be ok within FreeSurfer, but you will not be able to use this volume with other software.
And an output volume with dimensions 65938 x 1 x 2 x 512 which does not work with FSL commands.
This is a problem since the next thing I want to do is to use fslmaths to collapse the surface in the X, Y, and Z dimensions to obtain a mean for the surface.
Also confusing is the fact that the above command works fine for the left hemisphere.
What's going on? Am I doing something wrong?