Hello,

I did the context-dependent correlation analysis according to the afni website [afni.nimh.nih.gov] and got the warning message that my SEED input file which is inserted as a regressor on step 6 (Regression analysis) has 3 columns. Has that ever occurred to someone before? And is this problematic?

In fact, columns 2 and 3 consist of 0s only. Should I eliminate these columns?

Here are the 3dinfo specifications of the file:

Dataset File: SEED_ts_C1_5392.1D
Identifier Code: A1D_TWYyGc6gyc7RFMepbIdREQ Creation Date: Mon Apr 13 05:19:21 2009
Dataset Type: Anat Bucket (-abuc)
Byte Order: LSB_FIRST {assumed} [this CPU native = LSB_FIRST]
Storage Mode: AFNI .1D file
Storage Space: 5040 (5.0 thousand) 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- 419.000 [L] -step- 1.000 mm [420 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 values stored at each pixel = 3
-- At sub-brick #0 '?' datum type is float
-- At sub-brick #1 '?' datum type is float
-- At sub-brick #2 '?' datum type is float

Thank you very much,
Jana