# Extracting fixels along the X, Y, and Z directions

**URL:** https://community.mrtrix.org/t/extracting-fixels-along-the-x-y-and-z-directions/8727
**Category:** Uncategorized
**Created:** [March 24, 2026, 10:12am UTC](https://community.mrtrix.org/t/extracting-fixels-along-the-x-y-and-z-directions/8727 "2026-03-24T10:12:34Z")
**Posts on this page:** 1
**Page:** 1

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### Author: ![Dr.quocvan](https://community.mrtrix.org/user_avatar/community.mrtrix.org/dr.quocvan/32/5435_2.png) [@Dr.quocvan](https://community.mrtrix.org/u/Dr.quocvan)
#### Post date: [March 24, 2026, 10:12am UTC](https://community.mrtrix.org/t/extracting-fixels-along-the-x-y-and-z-directions/8727/1 "2026-03-24T10:12:34Z")

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Hi everyone,  
I have a question regarding extracting fixels along the X, Y, and Z directions. I followed the MRtrix3 reference documentation using fixel2sh and sh2peaks, but when visualizing with ODFs and fixel\_plot, the extracted fixel peaks do not correspond to the expected lobes. I am not sure which step might be incorrect. Is there a recommended way to extract fixels specifically along the X, Y, and Z directions?