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

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bob cox
August 25, 2003 08:54AM
You have a mask in +tlrc space and time series in +orig space, so you have to convert something. You can do it either way, as you guess:
mask -> +orig using 3dfractionize -warp
time series -> +tlrc using adwarp (or the AFNI GUI's "Write")
followed by 3dmaskave, 3dmaskdump, and/or 3dROIstats, as appropriate.

I'm not sure that it makes much difference which way you go. You might try both on one dataset to see if you get significantly different answers (I'm assuming you want to create an ROI-averaged time series or some similar statistic).

A practical point is that each 3D+time dataset in +tlrc space will be huge (100s of MB), so that the second method will be slower and consume more disk space.

bob cox
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Subject Author Posted

application of functional ROI masks

Philippe Goldin August 24, 2003 07:53PM

Re: application of functional ROI masks

bob cox August 25, 2003 08:54AM

Re: application of functional ROI masks

Philippe Goldin August 25, 2003 04:08PM

Re: application of functional ROI masks

bob cox August 25, 2003 04:55PM

Re: application of functional ROI masks

Philippe Goldin August 25, 2003 06:54PM