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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gang
March 14, 2018 11:03AM
Wiktor,

> So it looks like this is only a numerical issue. However, adding option "-datum float" to 3dcalc did not change the results.

You can double check some voxels in the brain and make sure that those two files have roughly the same z-values.

> "3dmerge -1zscore" sounds like a very helpful command, but actually for my AFNI-format data it only works for the
> t-statistic map (brick [2]), not for the F-statistic map (brick [0]):

Actually it did. It does not change the labels, but it does convert all statistic values to z-values as shown in the sub-brick coding:

> statcode = fizt

which indicates a Z-stat sub-brick.

Gang
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Subject Author Posted

3dcalc transformations of the statistic maps

wo222 March 13, 2018 09:39AM

Re: 3dcalc transformations of the statistic maps

gang March 13, 2018 05:57PM

Re: 3dcalc transformations of the statistic maps

wo222 March 13, 2018 07:40PM

Re: 3dcalc transformations of the statistic maps

gang March 14, 2018 11:03AM