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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ohadfel
February 14, 2017 07:44AM
Hi,
I am new to AFNI and I am trying to get a transformation matrix to convert points of interest.
The points were chosen on anat+orig file and I want to transform them to ortho_orig coordinates.
The ortho+orig file was created by using TAGALIGN and then I used the nudging tool.

I tried the following but the transformed point doesn't make sense.

nudge_rot_mat*(TAGALIGN_MATVEC_mat(:,1:3)*anat_pnt'+TAGALIGN_MATVEC_mat(:,4))+nudge_shift';
Am I missing something?

attached are the anat and ortho files.
HEAD and BRIK files

Can anybody help?
Thanks,
Ohad Felsenstein



Edited 1 time(s). Last edit at 02/16/2017 03:25AM by ohadfel.
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Subject Author Posted

Transformation matrix between anat and ortho files

ohadfel February 14, 2017 07:44AM

Re: Transformation matrix between anat and ortho files

Daniel Glen February 17, 2017 11:55AM