Principal Components Analysis of the HGDP dataset plus the new JPT (Japanese in Tokyo) and Ecuadorian samples. Principal Components Analysis was carried with EIGENSOFT, and Ecuadorian and JPT samples were projected on the axes obtained using all HGDP populations.
Massimo Mezzavilla, Maria Geppert, Chris Tyler-Smith, Lutz Roewer, and Yali Xue
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Massimo Mezzavilla et al. "Insights into the origin of rare haplogroup C3* Y chromosomes in South America from high-density autosomal SNP genotyping" Forensic Sci Int Genet. 2015 Mar; 15: 115–120. doi:  10.1016/j.fsigen.2014.11.005 <a rel="nofollow" class="external free" href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4312352/">https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4312352/</a>