tweak derived.gawk to make it portable #1
Description
The script currently uses only one gawk-specific feature - arrays of arrays. I may be able to rewrite it to use regular "fake" awk multidimensional array instead.
It would allow using faster mawk (even though the script takes only a few minutes to process 4.5M sites for 50 samples) or bioawk for compressed data. Not a high priority though (it's already fast enough and input can be piped from zcat).
Links:
https://stackoverflow.com/questions/3060600/awk-array-iteration-for-multi-dimensional-arrays