Subsetting individuals from IMPUTE2 ref files: .hap and .legend

Question

[GabrielMontenegro]

I wanted to do some analysis using the phased data from the 1000 Genomes Project. I found that Impute2 provides the 1KG data phased, which is used for imputation: A file with haplotype information called .hap and with the variant information called .legend. However, I only want to work with a subset of the individuals and I couldn't find an option to subset a number of individuals from the hap file.

Any idea how I could do it?

Thank you.

[Peter Chung]

I have that question too, imputation only choose one population as reference panel do you know how to do it now? I would like to extract CHS CHB population out from .sample, .legend and .hap file of impute2 reference data phase3.