¥Most 3dSomething command line programs can read 1D instead of volumetric
data
Ð The "spatial"
direction is down the columns (vertical).
Ð The default is that across
the rows (horizontal) is a "bucket" dimension.
ÐThe new environment variable AFNI_1D_TIME, if set to YES, will cause the horizontal
direction to be the time axis (with TR=1).
Ð
¥This makes it possible to input .1D files to programs that process 3D+time datasets
ÐSome files need to be transposed first -- so that the time axis is horizontal rather than
vertical. For example, assume fred.1D is a time series stored in a
column vector.
Ð
Ð 1dtranspose fred.1D fred_q.1D
Ð 3dFourier -prefix fred_filt_q -highpass
0.1 -retrend fred_q.1D
Ð 1dtranspose fred_filt_q.1D fred_filt.1D
Ð rm -f fred_q.1D fred_file_q.1D