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 10, 2009 10:10AM
I have modified the source code of 3dABoverlap so that if an input dataset is already in byte format, and has only 1 sub-brick (as produced by 3dAutomask), then the automask operation will not be carried out.

Note that doing a similar operation in two different ways:

  3dAutomask -prefix Amm A+orig
  3dAutomask -prefix Bmm B+orig
  3dABoverlap Amm+orig Bmm+orig

versus

  3dAboverlap A+orig B+orig

will probably not give identical results if the datasets A+orig and B+orig are not on the same grid (e.g., anat and EPI), since in the first case, the automask of B is generated and then resampled to the grid of A (inside 3dABoverlap), whereas in the second case, B is resampled to the grid of A and THEN its automask is generated. The different order of resampling and automasking will give different results. Not wildly different, but not identical.
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Subject Author Posted

3dABoverlap: feature request

Terry Nycum July 29, 2009 06:00PM

Re: 3dABoverlap: feature request

bob cox August 10, 2009 10:10AM

Re: 3dABoverlap: feature request

Terry March 12, 2010 10:02PM