It is the conversion factor from Hz to radians/sec: 2*pi = 6.283
You want to leave that as is.

cheers,
MH
-- 
Michael Harms, Ph.D.
-----------------------------------------------------------
Conte Center for the Neuroscience of Mental Disorders
Washington University School of Medicine
Department of Psychiatry, Box 8134
660 South Euclid Ave. Tel: 314-747-6173
St. Louis, MO  63110 Email: [email protected]

From: Jian Chen <[email protected]>
Date: Thursday, June 4, 2015 10:19 PM
To: "[email protected]" <[email protected]>
Subject: [HCP-Users] TopupPreprocessingAll.sh

Dear Expert,

I am trying to using TopupPreprocessingAll.sh on my own EPI data. I have looked TopupPreprocessingAll.sh line 254

${FSLDIR}/bin/fslmaths ${WD}/TopupField -mul 6.283 ${WD}/TopupField

What is this 6.283, do I need make change according to my acquisition setting?

Thanks.

Jian Chen

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