On Sun, May 30, 2010 at 6:15 PM, Dario Strbenac <[email protected]>wrote:
> Hello,
>
> I'd like to keep my RangedData object in the same order as I constructed
> it. I can't find any options in the documentation about this. Anyone know
> how to do this ?
>
> e.g.
>
> > peaksRangedData <- RangedData(space = c("chr1", "chr2", "chr3", "chr20"),
> ranges = IRanges(start = c(1000, 2000, 3000, 4000), end = c(5000, 6000,
> 7000, 8000)))
> > peaksRangedData
> RangedData with 4 rows and 0 value columns across 4 spaces
> space ranges |
> <character> <IRanges> |
> 1 chr1 [1000, 5000] |
> 2 chr2 [2000, 6000] |
> 3 chr20 [4000, 8000] |
> 4 chr3 [3000, 7000] |
>
> i. e. The object was automatically sorted based on the ASCII ordering of
> 'space'.
>
> Can this be done ?
>
>
No. But if you want it in order of the chromosomes, you can pass a factor to
the 'space' argument, with the levels in the correct order. e.g.
RangedData(space = factor(chr, paste("chr", 1:22, sep = "")), ...)
> --------------------------------------
> Dario Strbenac
> Research Assistant
> Cancer Epigenetics
> Garvan Institute of Medical Research
> Darlinghurst NSW 2010
> Australia
>
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