Hi, 

    Since I have called the SNPs using exactSNP, a VCF file was returned. firstly, I read this VCF file in R:

 vcf <- readVcf(file=paste('/usr/home/qgg/flz/RNA-seq/SNP/',"11",".exactSNP.VCF",sep=""),"bosTau6")

when I used geno function to find some information:  

geno(vcf)

It is empty, no information contained. As I want to get the genotype of the SNP, Could you give some advise, Thank you for the kindly help.