[Bioc-sig-seq] Like subseq() but with the ability to accept a vector of starts

Martin Morgan mtmorgan at fhcrc.org
Wed Jun 1 18:11:54 CEST 2011


On 06/01/2011 09:06 AM, Ivan Gregoretti wrote:
> Hello IRanges connoisseurs,
>
> Is there a function like subseq() but with the ability to accept a
> vector of starts?
>
>
> For instance, if I want to chop the beginning of the murine
> mitochondrial DNA into 50 nucleotides, I'd do
>
> library(BSgenome.Mmusculus.UCSC.mm9)
>
> subseq(Mmusculus[["chrM"]], start=1,   width=50)
> subseq(Mmusculus[["chrM"]], start=51,  width=50)
> subseq(Mmusculus[["chrM"]], start=101, width=50)

> ...
>
> however, it would be more convenient something like this
>
> subseq(Mmusculus[["chrM"]], start=c(1,51,101), width=50)
>
> Thank you
>
> Ivan
>
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