Hi AFNI experts,
I tried to overlay one hundred masks by using 3dcalc -a1 "image1" -a2 "image2" ...-a100 "image100" expr 'a1+a2*8....+a100*100' -prefix overlay
However, 3dcalc only takes -a....-z for input files but not 'a1'. How can I get around the small allowable variable number (26 from a to z) and combine one hundreds masks. Suggestions are appreciated.
Best,
Veda