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getting GC content
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| library(Homo.sapiens) | |
| library(TxDb.Hsapiens.UCSC.hg19.knownGene) | |
| library(BSgenome.Hsapiens.UCSC.hg19) | |
| txdb <- TxDb.Hsapiens.UCSC.hg19.knownGene | |
| e <- exonsBy(txdb, "gene") | |
| mapIds(Homo.sapiens, "AFTPH", "ENTREZID", "SYMBOL") | |
| ee <- e[["54812"]] | |
| dna <- getSeq(Hsapiens, ee) | |
| mcols(ee)$gc <- letterFrequency(dna, "GC", as.prob=TRUE) |
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