How to identify each data point in PCA for ethnicity study? · Biostar

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How to identify each data point in PCA for ethnicity study?

I was looking at this blog (https://majorityrights.com/weblog/comments/some_initial_thoughts_on_yang_et_al). I would like to know how I can identify the ethnicity of each data point using Genotyping BeadChip. This post here (http://stats.stackexchange.com/questions/8777/in-genome-wide-association-studies-what-are-principal-components) mentions that we can iteratively remove any outliers that is 6SD away. Could anyone suggest me what I can do to determine the ethnicity of all the data points in PCA or provide R script to do this job?

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written 10.4 years ago by MAPK

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