Dear list,
I wish to plot chromatin precipitation data: I would like to have a
rectangles (x:end-start, y:peak) but I do not have an idea how to define x
(in terms of qplot syntax) and to choose the correct geom.
mydata is a subset of a larger file.
> mydata
chrom start end peak
1 chr11 5291000 5291926 8
2 chr11 10988025 10988526 7
3 chr11 11767950 11768676 8
4 chr11 11840900 11841851 8
5 chr11 12267450 12268076 12
6 chr11 12276675 12277051 7
> dput(mydata)
structure(list(chrom = structure(c(3L, 3L, 3L, 3L, 3L, 3L), .Label =
c("chr1",
"chr10", "chr11", "chr12", "chr13", "chr14", "chr15", "chr16",
"chr17", "chr18", "chr19", "chr2", "chr3", "chr4", "chr5", "chr6",
"chr7", "chr8", "chr9", "chrX"), class = "factor"), start = c(5291000L,
10988025L, 11767950L, 11840900L, 12267450L, 12276675L), end = c(5291926L,
10988526L, 11768676L, 11841851L, 12268076L, 12277051L), peak = c(8L,
7L, 8L, 8L, 12L, 7L)), .Names = c("chrom", "start", "end", "peak"
), row.names = c(NA, -6L), class = "data.frame")
>
Thanks for some instructions.
Hermann Norpois
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