The $ is effectively a "the last sub-brick" selector. So you could try:
stats.subj1_REML+tlrc'[1..$(2)]'
More info is available near the end of the afni -help output.
INPUT DATASET NAMES
-------------------
An input dataset is specified using one of these forms:
'prefix+view', 'prefix+view.HEAD', or 'prefix+view.BRIK'.
You can also add a sub-brick selection list after the end of the
dataset name. This allows only a subset of the sub-bricks to be
read in (by default, all of a dataset's sub-bricks are input).
A sub-brick selection list looks like one of the following forms:
fred+orig[5] ==> use only sub-brick #5
fred+orig[5,9,17] ==> use #5, #9, and #17
fred+orig[5..8] or [5-8] ==> use #5, #6, #7, and #8
fred+orig[5..13(2)] or [5-13(2)] ==> use #5, #7, #9, #11, and #13
Sub-brick indexes start at 0. You can use the character '$'
to indicate the last sub-brick in a dataset; for example, you
can select every third sub-brick by using the selection list
fred+orig[0..$(3)]
Edited 1 time(s). Last edit at 01/22/2016 11:22AM by Peter Molfese.
