AFNI Message Board

Dear AFNI users-

We are very pleased to announce that the new AFNI Message Board framework is up! Please join us at:

https://discuss.afni.nimh.nih.gov

Existing user accounts have been migrated, so returning users can login by requesting a password reset. New users can create accounts, as well, through a standard account creation process. Please note that these setup emails might initially go to spam folders (esp. for NIH users!), so please check those locations in the beginning.

The current Message Board discussion threads have been migrated to the new framework. The current Message Board will remain visible, but read-only, for a little while.

Sincerely, AFNI HQ

History of AFNI updates  

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November 17, 2017 04:01AM
Thanks, that can explain the smoothed look of the time series in the middle slices.

I did:
$ 3dinfo -orient pb01.rest1_14.r01.despike+orig.
RPI
This indicates that the Z-coordinate (or k) goes from low/neg to high/pos when travelling up the stack. Which is what i see in the viewer as well. Attaching print screen of the despike time series (top) and the tshift time series (bottom) of the most top slice. Code from the .proc:
# ================================= tshift =================================
# time shift data so all slice timing is the same 
foreach run ( $runs )
    3dTshift -tzero 0 -quintic -prefix pb02.$subj.r$run.tshift \
             -tpattern seq+z                                   \
             pb01.$subj.r$run.despike+orig
end

# --------------------------------
# extract volreg registration base
3dbucket -prefix vr_base_min_outlier                           \
    pb02.$subj.r$minoutrun.tshift+orig"[$minouttr]"

Something is not right, right? The peaks travel to the right.



Edited 1 time(s). Last edit at 11/17/2017 04:02AM by Robin.
Attachments:
open | download - top_despike_bottom_tshift.png (50.8 KB)
Subject Author Posted

3dTshift: Does AFNI know the slice timing order?

Robin September 28, 2017 10:23AM

Re: 3dTshift: Does AFNI know the slice timing order?

Peter Molfese September 28, 2017 11:58AM

Re: 3dTshift: Does AFNI know the slice timing order?

Daniel Glen September 29, 2017 04:56PM

Re: 3dTshift: Does AFNI know the slice timing order? Attachments

Robin November 16, 2017 05:14AM

Re: 3dTshift: Does AFNI know the slice timing order?

Daniel Glen November 16, 2017 12:21PM

Re: 3dTshift: Does AFNI know the slice timing order?

Robin November 16, 2017 12:36PM

Re: 3dTshift: Does AFNI know the slice timing order?

Daniel Glen November 16, 2017 01:42PM

Re: 3dTshift: Does AFNI know the slice timing order? Attachments

Robin November 17, 2017 04:01AM

Re: 3dTshift: Does AFNI know the slice timing order?

rick reynolds November 17, 2017 09:03AM

Re: 3dTshift: Does AFNI know the slice timing order?

Robin November 17, 2017 09:37AM