Re: [Freesurfer] Command line to map volume data to surface data

2010-08-06 Thread Xinian Zuo
Thank you very much, Doug! On Fri, Aug 6, 2010 at 9:24 AM, Douglas Greve wrote: >  It's an empirical relationship based on the number of iterations needed to > get a delta function to look like a gaussian of a certain FWHM. You can > still specify the number of iterations with --nsmooth. See the

Re: [Freesurfer] Command line to map volume data to surface data

2010-08-06 Thread Douglas Greve
It's an empirical relationship based on the number of iterations needed to get a delta function to look like a gaussian of a certain FWHM. You can still specify the number of iterations with --nsmooth. See the --help. doug On 8/5/10 5:34 PM, Xinian Zuo wrote: > Nice to know the gold standard

Re: [Freesurfer] Command line to map volume data to surface data

2010-08-05 Thread Xinian Zuo
Nice to know the gold standard, now going with the mri_vol2surf :) One more question: As for the overlay surface smoothing option, in tksurfer gui, I can set it by following ' tools -> surface -> smooth overlay -> number of steps', or give an value to option ' --surf-fwhm ' in the command. What is

Re: [Freesurfer] Command line to map volume data to surface data

2010-08-05 Thread Douglas N Greve
I'm not entirely sure how tksurfer is sampling from the volume to the surface. mri_vol2surf is the gold standard, so use that. doug Xinian Zuo wrote: > Hey Doug, > > Following your suggestions, I ran the command below: > > mri_vol2surf --mov data.nii.gz --reg > ${FREESURFER_HOME}/average/mni152.

Re: [Freesurfer] Command line to map volume data to surface data

2010-08-05 Thread Xinian Zuo
Hey Doug, Following your suggestions, I ran the command below: mri_vol2surf --mov data.nii.gz --reg ${FREESURFER_HOME}/average/mni152.register.dat --hemi rh --o ./rh.test.vol2surf.mgh --trgsubject fsaverage --surf inflated_pre --projfrac 0 --interp nearest but, seems the values in rh.test.vol2su

Re: [Freesurfer] Command line to map volume data to surface data

2010-08-05 Thread Douglas N Greve
mri_vol2surf is the right command. Have you looked at the help for it? You can get it by running mri_vol2surf --help I think tksurfer uses a projfrac of 0 and nearest neighbor interpolation. You can load the result directly into tksurfer to see if it looks the same. doug Xinian Zuo wrote: >

[Freesurfer] Command line to map volume data to surface data

2010-08-05 Thread Xinian Zuo
Dear surfers, Hi, I used freeesurfer to visualize my volume from FEAT outputs on the surface in the way: tksurfer fsaverage rh inflated_pre -overlay data.nii.gz -mni152reg , then save surface overlay as a mgh file. My question is, how can I get the identical mgh data by using a command line with