 to VCF format.
In the VCF data lines, there are 8 fixed fields per record: CHROM, POS, ID, REF, ALT, QUAL, FILTER, INFO. These field, as well as the FORMAT field can be specifed in the 5th parameter. For example, specify c(&ldquo;CHROM&rdquo;, &ldquo;POS&rdquo;) will extract the genomic position.</p>

<p>In the VCF INFO field, there may be information including variant depth (DP), variant allele counts (AC), total allele counts (AN). To extract those information, use the 6th paramter. </p>

<p>In the VCF g