readTargets {limma} | R Documentation

## Read RNA Targets File

### Description

Read a RNA targets file into dataframe.

### Usage

    readTargets(file="Targets.txt", path=NULL, sep="\t", row.names="FileName")

### Arguments

`file` | character string giving the name of the targets file.
`path` | character string giving the directory containing the file. Can be omitted if the file is in the current working irectory.
`sep` | the field separator character
`row.names` | character string giving header of column from which to obtain row names

### Details

The targets file is a text file with rows corresponding to microarrays and columns `Cy3` and `Cy5` specifying which RNA samples are hybridized to which channel of each microarray. Other columns are optional.

### Value

Data frame usually including columns

`Cy3` | character vector giving names of RNA samples
`Cy5` | character vector giving names of RNA samples

Character columns are not converted to factors.

### Author(s)

Gordon Smyth

### See Also

An overview of LIMMA functions for reading data is given in 3.ReadingData.

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