sumTechReps {edgeR} | R Documentation

## Sum Over Replicate Samples

### Description

Condense the columns of a matrix or DGEList object so that counts are summed over technical replicate samples.

### Usage

    ## Default S3 method:
    sumTechReps(x, ID=colnames(x), ...)
    ## S3 method for class 'DGEList'
    sumTechReps(x, ID=colnames(x), ...)

### Arguments

`x` | a numeric matrix or `DGEList` object.
`ID` | sample identifier.
`...` | other arguments are not currently used.

### Details

A new matrix or DGEList object is computed in which the counts for technical replicate samples are replaced by their sums.

### Value

A data object of the same class as `x` with a column for each unique value of `ID`. Columns are in the same order as the ID values first occur in the ID vector.

### Author(s)

Gordon Smyth and Yifang Hu

### See Also

`rowsum`.

### Examples

    x <- matrix(rpois(8*3,lambda=5),8,3)
    colnames(x) <- c("a","a","b")
    sumTechReps(x)

[Package edgeR version 3.20.9 Index]