Description of the geno format.
The geno format can be used as an input format
for genotypic matrices in the functions snmf,
lfmm, and pca.
Details
The geno format has one row for each SNP.
Each row contains 1 character for each individual:
0 means zero copy of the reference allele.
1 means one copy of the reference allele.
2 means two copies of the reference allele.
9 means missing data.
Here is an example of a genotypic matrix using the geno format with 3
individuals and 4 loci:
providing 
.