Hi I want to use plink to keep individuals. The command:
plink --file data --keep mylist.txt
My question is what is the format of mylist.txt? I heard there is a header such as "FID IID" in the file? Is it true?
Individual list file The individual list file is used in the --keep or --remove argument that specifies a group of individuals to be used in analysis, or to be excluded from analysis. This is a simple file format, with one family identifier and individual identifier per line, separated by tab character. This format is the same as used by PLINK, so PLINK users can easily specify the inclusion/exclusion criteria using existing files.