af                      Allele frequencies
af_snp                  Allele frequencies for SNP
centerscale             Matrix centering and scaling
hgdp_subset             HGDP subset
lfa                     Logistic factor analysis
pca_af                  PCA Allele frequencies
sHWE                    Hardy-Weinberg Equilibrium in structure
                        populations
trunc_svd               Truncated singular value decomposition
