English: Spatial ancestry analysis of Chilean population. (a) All populations, (b) Chilean and African populations, (c) Chilean and European populations and (d) Chilean and Native-American populations. Chileans appear in black with its global African, European and Native-American ancestry proportions in (b), (c) and (d), respectively, as estimated by local ancestry methods. Figure a shows that the spatial analysis clearly separates the three ancestral population and, as expected, the admixed Chileans are scattered between the European and the Native-Americans. We restrict our spatial analysis to the Chileans with each of its ancestral populations. Figure b shows the Chilean-admixed population clearly separated from the African populations. Within Africans, the Yoruba in Ibadan, Nigeria (YRI) and the Luhya in Webuye, Kenya (LWK) are close together, but the African Ancestry from Southwest United States (ASW) is spread along a line and is the closest to the Chileans. Figure c shows that the Europeans are separated into two groups, Britain (GBR) and North Europe (CEU) together and Spaniards and Italians together, closer to the Chileans. Figure d shows the Chileans together with the Native-Americans. Figure b–d shows the Chileans with their global proportion of African, European and Native-American ancestry, respectively, estimated by the LAI method. We observe consistency between the ancestral proportion estimates given by the LAI (Local ancestry inference) methods and the spatial ancestry analysis as individuals with higher/lower proportion in ancestry are closer/farther to the ancestral populations.