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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kickan
February 20, 2015 04:03AM
I just noticed that you have made some changes to the 3dClustSim function. I appreciate that you improve the functionality in AFNI, and have some feature requests.

It would be nice if you can select the distance type (NN1, NN2, NN3), if you are only interested in one of them.

It would be nice if you can select the thresholding type (one-sided, two-sided, bi-sided), if you are only interested in one of them.

It would also be nice if you can specify the voxel-wise threshold as a z-score, in addition to a p-value threshold. So something like

3dClustSim -mask mask.nii -fwhmxyz 6 6 6 -athr 0.05 -zthr 2.3, similar to

3dClustSim -mask mask.nii -fwhmxyz 6 6 6 -athr 0.05 -pthr 0.01

The reason for this is that the 3dclust function wants the threshold as a "regular" value, and not as a p-value, and it would be nice if you can use the same threshold as for the 3dClustSim function (an alternative is to add -pthresh for 3dclust)

3dclust -1noneg -1thresh 2.3 -dxyz=1 1.01 10 brik.nii
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Subject Author Posted

New 3dClustSim

kickan February 20, 2015 04:03AM

Re: New 3dClustSim

Isaac Schwabacher February 20, 2015 12:03PM