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== How do I get reference files for an region of interest?  ==
 
== How do I get reference files for an region of interest?  ==
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Note that you do not need to extract regional pedigree files for your own samples because SNPs in pedigree but not in reference will be automatically discarded. <br> 1. For HapMapII format, download haplotypes from http://www.sph.umich.edu/csg/ylwtx/HapMapForMach.tgz <br> 2. For MACH format, you can do the following:  
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Note that you do not need to extract regional pedigree files for your own samples because SNPs in pedigree but not in reference will be automatically discarded. <br> 1. For HapMapII format, download haplotypes from http://csg.sph.umich.edu//ylwtx/HapMapForMach.tgz <br> 2. For MACH format, you can do the following:  
    
*First, find the first and last SNP in the region you are interested in. Say "rsFIRST" and "rsLAST", defined according to position.  
 
*First, find the first and last SNP in the region you are interested in. Say "rsFIRST" and "rsLAST", defined according to position.  
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