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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April 16, 2019 07:53PM
Thanks Taylor. This is super useful!

Actually, I am confused because, to apply an affine transformation, you can simply extract the geometric matrix, multiple by the affine transformation, and then save the new geometric matrix into the header file. In this case, you avoid any resampling and maximally preserve the same resolution and the matrix size of the original file. When doesn't afni implement such regime?? In current 3dAllineate, you have to specify a master grid. Maybe I am wrong here... but it seems to make sense to me.

Thanks anyway.

Ruyuan
Subject Author Posted

3dAllineate and affine transformation

ruyuanzhang April 16, 2019 04:19PM

Re: 3dAllineate and affine transformation

ptaylor April 16, 2019 06:24PM

Re: 3dAllineate and affine transformation

ruyuanzhang April 16, 2019 06:33PM

Re: 3dAllineate and affine transformation

ruyuanzhang April 16, 2019 06:36PM

Re: 3dAllineate and affine transformation

ptaylor April 16, 2019 06:45PM

Re: 3dAllineate and affine transformation

ruyuanzhang April 16, 2019 07:53PM

Re: 3dAllineate and affine transformation

ptaylor April 16, 2019 06:49PM

Re: 3dAllineate and affine transformation

ruyuanzhang April 17, 2019 01:15PM

Re: 3dAllineate and affine transformation

ptaylor April 17, 2019 01:24PM

Re: 3dAllineate and affine transformation

ruyuanzhang April 17, 2019 04:20PM