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.
