# tckmap, stat\_vox & stat\_tck meaning

**URL:** <https://community.mrtrix.org/t/tckmap-stat-vox-stat-tck-meaning/7656>\
**Category:** Uncategorized\
**Tags:** tractography, preprocessing\
**Created:** [May 23, 2024, 6:00am UTC](https://community.mrtrix.org/t/tckmap-stat-vox-stat-tck-meaning/7656 "2024-05-23T06:00:43Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![janice.jy.min](https://community.mrtrix.org/user_avatar/community.mrtrix.org/janice.jy.min/32/4189_2.png) [@janice.jy.min](https://community.mrtrix.org/u/janice.jy.min)\
**Post date:** [May 23, 2024, 6:00am UTC](https://community.mrtrix.org/t/tckmap-stat-vox-stat-tck-meaning/7656/1 "2024-05-23T06:00:43Z")

</div>

Hello.  
Dear experts,

I am trying to create Track-weighted FA image.  
I created an image via  
‘tckmap {input\_tck -vox 1 -contrast scalar\_map -image {fa\_image} -stat\_vox mean {fa\_output\_file} -force’

As I understood, this code leads to an image that is computed by -stat\_vox mean and -stat\_tck mean.

I am unclear what stat\_tck mean would do.  
Does it mean that my image will calculate mean FA along the total streamline? or it will calculate mean FA value within a voxel?

Thank you in advance