Hcp workbench cifti-smoothing question

Software Support
1

hi all, i am a little confused how to correctly use this command to utilize fwhm: Connectome - Workbench Commands

wb_command -cifti-smoothing
$input_cifti_path
4 4
COLUMN
$output_cifti_path
-fwhm
-left-surface …/…/code/analysis/templates/tpl-fsLR_hemi-L_den-32k_sphere.surf.gii
-right-surface …/…/code/analysis/templates/tpl-fsLR_hemi-R_den-32k_sphere.surf.gii

do you think this is correct? or does the 4 4 need to go after -fwhm? it isn’t clear to me based on the documentation.

thanks!

2

Hi @dclb,

The 4 4 are corresponding to the surface and volume size of the kernel. The -fwhm is you telling the kernel to use 4 as the FWHM of the smoothing distribution function, instead of the variance.

So in short, what you have should run. Do you get errors, do the visualized results look okay?

Best,
Steven

3

I was not sure if I needed to put the 4 4 after -fwhm, hence me asking the question. I just tried running what I have posted above and got the error

ERROR: Unexpected parameter: -fwhm

Any thoughts?

4

Followed up offline, turns out it was just due to not using the most up to date version.