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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wo222
March 13, 2018 07:40PM
Dear Gang,

Thanks a lot for your response! So it looks like this is only a numerical issue. However, adding option "-datum float" to 3dcalc did not change the results. "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]): 

3dmerge -1zscore stats.sub-CAS0001_REML+tlrc[0]

3dinfo mrg+tlrc

++ 3dinfo: AFNI version=AFNI_16.2.02 (Jul 19 2016) [64-bit]

Dataset File:    mrg+tlrc
Identifier Code: XYZ_PWSMDGionJcw1ZRWJwi0kA  Creation Date: Wed Mar 14 00:52:12 2018
Template Space:  TLRC
Dataset Type:    Func-Bucket (-fbuc)
Byte Order:      LSB_FIRST [this CPU native = LSB_FIRST]
Storage Mode:    BRIK
Storage Space:   524,288 (524 thousand [kilo]) bytes
Geometry String: "MATRIX(2.999178,0,-0.103922,-94.31225,0.036819,-2.554494,2.327512,34.34985,0.05979,1.573074,3.779615,-124.6071):64,64,32"
Data Axes Tilt:  Oblique (31.651 deg. from plumb)
Data Axes Approximate Orientation:
  first  (x) = Right-to-Left
  second (y) = Posterior-to-Anterior
  third  (z) = Inferior-to-Superior   [-orient RPI]
R-to-L extent:   -94.312 [R] -to-    94.688 [L] -step-     3.000 mm [ 64 voxels]
A-to-P extent:  -154.650 [A] -to-    34.350 [P] -step-     3.000 mm [ 64 voxels]
I-to-S extent:  -124.607  -to-    13.033 [S] -step-     4.440 mm [ 32 voxels]
Number of values stored at each pixel = 1
  -- At sub-brick #0 'Full_Fstat' datum type is float:  8.67712e-06 to       7.63014
     statcode = fizt

It is not important, but maybe you would see an explanation.

Best wishes,

Wiktor Olszowy



Edited 1 time(s). Last edit at 03/13/2018 08:54PM by wo222.
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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