read_012: read a set of 012 files from vcftools into a matrix of...
In eriqande/genoscapeRtools: Tools for building migratory bird genoscapes

Uses data.table::fread for speed. Note that the individual names should be unique! So should the locus names. The .pos file should have two columns of names (at least things are hard-wired for that at the moment).

1	read_012(prefix, gz = FALSE)

`prefix`	the (path) prefix on the files to be read. The files will be `prefix.012`, `prefix.012.indv`, and `prefix.012.pos`
`gz`	if this is set to TRUE, then the function expects that the 012 file ends in 012.gz and is gzipped. For this to work, you have to have a decent shell on your system with `gzcat` for gunzipping the file to a stream. If you are on a Mac, that should be fine. If you are on Windows, probably not. If there are any problems, don't keep your file gzipped!