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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March 22, 2018 01:20PM
You can use 3dQwarp with options "-maxlev 0 -noQ -allineate" to make it compute a warp with the affine part ("-allineate") plus a single 3D cubic polynomial ("-maxlev 0 -noQ"). These results should be similar to the mostly useless bilinear warp and will be available for use with other programs, such as 3dNwarpApply.

"-noQ" is a hidden option, which just means to skip the quintic polynomial steps at level 0 (the global patch). This option will make level 0 run pretty fast, since it will just do one cubic optimization.
Subject Author Posted

Combining transforms 3dAllineate -nwarp (bilinear) and 3dQwarp

AjaySK January 04, 2018 12:05PM

Re: Combining transforms 3dAllineate -nwarp (bilinear) and 3dQwarp

AjaySK January 24, 2018 06:02PM

Re: Combining transforms 3dAllineate -nwarp (bilinear) and 3dQwarp

Bob Cox January 25, 2018 08:54AM

Re: Combining transforms 3dAllineate -nwarp (bilinear) and 3dQwarp

AjaySK March 21, 2018 04:58PM

Re: Combining transforms 3dAllineate -nwarp (bilinear) and 3dQwarp

RWCox March 21, 2018 05:26PM

Re: Combining transforms 3dAllineate -nwarp (bilinear) and 3dQwarp

AjaySK March 21, 2018 05:53PM

Re: Combining transforms 3dAllineate -nwarp (bilinear) and 3dQwarp

RWCox March 22, 2018 05:51AM

Re: Combining transforms 3dAllineate -nwarp (bilinear) and 3dQwarp

AjaySK March 22, 2018 07:20AM

Re: Combining transforms 3dAllineate -nwarp (bilinear) and 3dQwarp

Bob Cox March 22, 2018 01:20PM

Re: Combining transforms 3dAllineate -nwarp (bilinear) and 3dQwarp

AjaySK March 22, 2018 02:10PM

Re: Combining transforms 3dAllineate -nwarp (bilinear) and 3dQwarp

AjaySK March 22, 2018 02:10PM