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  

Previous Message Next Message
Message List New Topic Print View
|
rick reynolds
January 17, 2017 10:33AM
That is not quite correct. Distances are taken to be
Euclidean (sqrt of sum of squared differences).

The maximum pairwise displacement from 1d_tool.py is
computed as follows. Let the distance between any two
time points be the Euclidean distance of the motion
parameters in 6 dimensions (sqrt(sum squares of 6 diffs)).

The help shows how to understand this in 1 dimension
just as a simple example (where Euclidean dist is the
same as abs(diff)). But that does not extend to the
6 dimensional space.

See also "gen_ss_review_scripts.py -help_fields".

- rick
Reply Quote
RSS
Subject Author Posted

maximum pairwise displacement

Zhihao_Li January 15, 2017 09:01AM

Re: maximum pairwise displacement

rick reynolds January 17, 2017 10:33AM