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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January 30, 2018 04:09PM
Dear AFNI experts:

I used 3dresample to downsize the slice resolution from 321 slices to 53 slices via -dxyz, specifying 6 x slice thickness. I use "-rmode Linear". Specifically,

3dresample -dxyz 1.042 1.042 3.36 -rmode Linear -prefix ....

I checked the source codes but I was not sure the exact equation.

Is it a simple linear fit over 6 slices with a straight line?

Could someone explain?

I hope to find the exact equation used across the slices at the same XY location.

Thanks.

David Zhu
Subject Author Posted

linear interpolation in 3dresample

DavidZhu January 30, 2018 04:09PM

Re: linear interpolation in 3dresample

rick reynolds January 30, 2018 09:30PM

Re: linear interpolation in 3dresample

Daniel Glen January 31, 2018 11:46AM

Re: linear interpolation in 3dresample

DavidZhu February 02, 2018 06:13PM

Re: linear interpolation in 3dresample

rick reynolds February 05, 2018 11:24AM