Randomly sample sites from an input VCF dataset. Scale the sampling probability by the field specified by --scale-by (see advanced controls). This may be used to provide uniform sampling across allele frequencies, for instance (AF field in this case).
Options:
-r, --rate RATE base sampling probability per locus -s, --scale-by KEY scale sampling likelihood by this Float info field -p, --random-seed N use this random seed
Vcfrandomsample is a part of VCFlib toolkit developed by Erik Garrison (https://github.com/ekg/vcflib).