# #——mychunk1,缓存= TRUE, eval = TRUE,隐藏= TRUE - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - # #库文本文件(AshkenazimSonChr21)头(SonVariantsChr21) # # vcf文件库(VariantAnnotation) fl < -系统。文件(“extdata”、“SonVariantsChr21.vcf。广州”,包= " AshkenazimSonChr21”) vcf < - readVcf (fl,基因组=“hg19”)基因族群(vcf)信息(vcf)