Last data update: 2014.03.03

R: Density bean plots of methylation Beta values.
densityBeanPlotR Documentation

Density bean plots of methylation Beta values.

Description

Density ‘bean’ plots of methylation Beta values, primarily for QC.

Usage

densityBeanPlot(dat, sampGroups = NULL, sampNames = NULL, main = NULL,
    pal = brewer.pal(8, "Dark2"), numPositions = 10000)

Arguments

dat

An RGChannelSet, a MethylSet or a matrix. We either use the getBeta function to get Beta values (for the first two) or we assume the matrix contains Beta values.

sampGroups

Optional sample group labels. See details.

sampNames

Optional sample names. See details.

main

Plot title.

pal

Color palette.

numPositions

The density calculation uses numPositions randomly selected CpG positions. If NULL use all positions.

Details

This function produces the density bean plot component of the QC report. If sampGroups is specified, group-specific colors will be used. For speed reasons the plots are produced using a random subset of CpG positions. The number of positions used is specified by the numPositions option.

Value

No return value. Plots are produced as a side-effect.

Author(s)

Martin Aryee aryee@jhu.edu.

References

P Kampstra. Beanplot: A boxplot alternative for visual comparison of distributions. Journal of Statistical Software 28, (2008). http://www.jstatsoft.org/v28/c01

See Also

qcReport, mdsPlot, controlStripPlot, densityPlot

Examples

if (require(minfiData)) {

names <- pData(RGsetEx)$Sample_Name
groups <- pData(RGsetEx)$Sample_Group
par(mar=c(5,6,4,2))
densityBeanPlot(RGsetEx, sampNames=names, sampGroups=groups)

}

Results


R version 3.3.1 (2016-06-21) -- "Bug in Your Hair"
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Platform: x86_64-pc-linux-gnu (64-bit)

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Type 'demo()' for some demos, 'help()' for on-line help, or
'help.start()' for an HTML browser interface to help.
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> library(minfi)
Loading required package: BiocGenerics
Loading required package: parallel

Attaching package: 'BiocGenerics'

The following objects are masked from 'package:parallel':

    clusterApply, clusterApplyLB, clusterCall, clusterEvalQ,
    clusterExport, clusterMap, parApply, parCapply, parLapply,
    parLapplyLB, parRapply, parSapply, parSapplyLB

The following objects are masked from 'package:stats':

    IQR, mad, xtabs

The following objects are masked from 'package:base':

    Filter, Find, Map, Position, Reduce, anyDuplicated, append,
    as.data.frame, cbind, colnames, do.call, duplicated, eval, evalq,
    get, grep, grepl, intersect, is.unsorted, lapply, lengths, mapply,
    match, mget, order, paste, pmax, pmax.int, pmin, pmin.int, rank,
    rbind, rownames, sapply, setdiff, sort, table, tapply, union,
    unique, unsplit

Loading required package: Biobase
Welcome to Bioconductor

    Vignettes contain introductory material; view with
    'browseVignettes()'. To cite Bioconductor, see
    'citation("Biobase")', and for packages 'citation("pkgname")'.

Loading required package: lattice
Loading required package: GenomicRanges
Loading required package: S4Vectors
Loading required package: stats4

Attaching package: 'S4Vectors'

The following objects are masked from 'package:base':

    colMeans, colSums, expand.grid, rowMeans, rowSums

Loading required package: IRanges
Loading required package: GenomeInfoDb
Loading required package: SummarizedExperiment
Loading required package: Biostrings
Loading required package: XVector
Loading required package: bumphunter
Loading required package: foreach
Loading required package: iterators
Loading required package: locfit
locfit 1.5-9.1 	 2013-03-22
Setting options('download.file.method.GEOquery'='auto')
Setting options('GEOquery.inmemory.gpl'=FALSE)
> png(filename="/home/ddbj/snapshot/RGM3/R_BC/result/minfi/densityBeanPlot.Rd_%03d_medium.png", width=480, height=480)
> ### Name: densityBeanPlot
> ### Title: Density bean plots of methylation Beta values.
> ### Aliases: densityBeanPlot
> 
> ### ** Examples
> 
> if (require(minfiData)) {
+ 
+ names <- pData(RGsetEx)$Sample_Name
+ groups <- pData(RGsetEx)$Sample_Group
+ par(mar=c(5,6,4,2))
+ densityBeanPlot(RGsetEx, sampNames=names, sampGroups=groups)
+ 
+ }
Loading required package: minfiData
Loading required package: IlluminaHumanMethylation450kmanifest
Loading required package: IlluminaHumanMethylation450kanno.ilmn12.hg19
> 
> 
> 
> 
> 
> dev.off()
null device 
          1 
>