Hi,
I'm trying to run 3dDFT on a surface file but I'm running into some problems. Running 3dDFT prints a lot of '** GBMMP, bad dtype' errors to the screen, but outputs a file OK. If I load the file into SUMA, it looks like the ABS frequency spectrum I would expect. If I try and extract the phase using 3dcalc, though, the resulting file looks identical to the ABS. I'm wondering if 3dDFT is supported on surface files?
Thanks.
More details-
The input file:
++ 3dinfo: AFNI version=AFNI_2011_12_21_1014 (Sep 25 2012) [64-bit]
Dataset File: lh_func.niml.dset
Identifier Code: XYZ_Dqxwiex5g9hn6HSl-GwsHg Creation Date: Thu Oct 4 18:02:18 2012
Template Space:
Dataset Type: Echo Planar (-epan)
Byte Order: LSB_FIRST {assumed} [this CPU native = LSB_FIRST]
Storage Mode: NI_SURF_DSET
Storage Space: 26,029,200 (26 million) bytes
Data Axes Tilt: Unspecified, assumed plumb
Data Axes Orientation:
first (x) = Right-to-Left
second (y) = Anterior-to-Posterior
third (z) = Inferior-to-Superior [-orient RAI]
R-to-L extent: 0.000 -to- 65072.000 [L] -step- 1.000 mm [65073 voxels]
A-to-P extent: 0.000 -to- 0.000 -step- 1.000 mm [ 1 voxels]
I-to-S extent: 0.000 -to- 0.000 -step- 1.000 mm [ 1 voxels]
Number of time steps = 100 Time step = 3.00000s Origin = 0.00000s
-- At sub-brick #0 '#7' datum type is float
-- At sub-brick #1 '#8' datum type is float
-- At sub-brick #2 '#9' datum type is float
** For info on all 100 sub-bricks, use '3dinfo -verb' **
----- HISTORY -----
[fmri@mannion-fmri: Thu Oct 4 18:02:15 2012] 3dVol2Surf -spec /home/fmri/stemp/k1002/SUMA/k1002_lh.spec -surf_A smoothwm -surf_B pial -map_func ave -f_steps 15 -f_index nodes -sv k1002_SurfVol_Alnd_Exp+orig -grid_parent func+orig -out_niml lh_func.niml.dset
The 3dDFT:
3dDFT -prefix lh_dft.niml.dset lh_func.niml.dset
++ Authored by: Kevin Murphy & Zhark the Transformer
++ Data length = 100 ; FFT length = 100
++ Output complex-valued dataset: ./lh_dft.niml.dset
** GBMMP, bad dtype
# (... * 100 ) trimmed by DJM
The 3dDFT output:
++ 3dinfo: AFNI version=AFNI_2011_12_21_1014 (Sep 25 2012) [64-bit]
Dataset File: lh_dft.niml.dset
Identifier Code: XYZ_E00GTjyzbF5c9DQxiTQ54A Creation Date: Thu Oct 4 18:04:43 2012
Template Space:
Dataset Type: Echo Planar (-epan)
Byte Order: LSB_FIRST {assumed} [this CPU native = LSB_FIRST]
Storage Mode: NI_SURF_DSET
Storage Space: 26,029,200 (26 million) bytes
Data Axes Tilt: Unspecified, assumed plumb
Data Axes Orientation:
first (x) = Right-to-Left
second (y) = Anterior-to-Posterior
third (z) = Inferior-to-Superior [-orient RAI]
R-to-L extent: 0.000 -to- 65072.000 [L] -step- 1.000 mm [65073 voxels]
A-to-P extent: 0.000 -to- 0.000 -step- 1.000 mm [ 1 voxels]
I-to-S extent: 0.000 -to- 0.000 -step- 1.000 mm [ 1 voxels]
Number of time steps = 100 Time step = 0.00333s Origin = 0.00000s
-- At sub-brick #0 '#7' datum type is float
-- At sub-brick #1 '#8' datum type is float
-- At sub-brick #2 '#9' datum type is float
** For info on all 100 sub-bricks, use '3dinfo -verb' **
----- HISTORY -----
[fmri@mannion-fmri: Thu Oct 4 18:03:10 2012] 3dDFT -prefix lh_dft.niml.dset lh_func.niml.dset;
The 3dcalc command:
3dcalc -cx2r PHASE -a lh_dft.niml.dset -expr a -prefix lh_phase.niml.dset
