afni.nimh.nih.gov

I just figured out a way to do it:

>> 3dcalc -a epi_r1+'orig[0..(2)]' -b epi_r1+'orig[1..(2)]' -expr 'a+b' -prefix rm_3dcalc_sum2.nii.gz -overwrite

I might eventually want to sum ever 3 or 4 points together which I can add variables 'c' and 'd' and the adjusted above notation to do it. But if there's any more simple way to do it, would be interested to know. Thank you again for your time!

Cheers,
Edwin