getB {ENmix} | R Documentation

## Extract methylation Beta values.

### Description

Extract Methylation Beta value, Beta = Meth / (Meth + Unmeth + offset)

### Usage

    getB(mdat,type="Illumina",offset=100)

### Arguments

`mdat` | An object of class `methDataSet` or `MethylSet`.
`type` | type="Illumina" sets offset=100 as per Genome Studio software.
`offset` | Regularization factor in calculating beta ratio, 100 in default

### Value

Methylation Beta value = Meth / (Meth + Unmeth + offset). Meth is methylated intensity matrix, Unmeth is unmethylated intensity matrix.

### Author(s)

Zongli Xu

### Examples

    if (require(minfiData)){
    path <- file.path(find.package("minfiData"),"extdata")
    rgSet <- readidat(path = path,recursive = TRUE)
    mdat=getmeth(rgSet)
    beta=getB(mdat,"Illumina")
    }

[Package ENmix version 1.28.8 Index]