addMetadata {ChIPpeakAnno} | R Documentation

## Add metadata of the GRanges objects used for findOverlapsOfPeaks

### Description

Add metadata to to overlapping peaks after calling findOverlapsOfPeaks.

### Usage

    addMetadata(ol, colNames=NULL, FUN=c, ...)

### Arguments

`ol` | An object of overlappingPeaks, which is output of findOverlapsOfPeaks.
`colNames` | Names of metadata column to be added. If it is NULL, addMetadata will guess what to add.
`FUN` | A function to be called
`...` | Arguments to the function call.

### Value

return value is An object of overlappingPeaks.

### Author(s)

Jianhong Ou

### See Also

See Also as `findOverlapsOfPeaks`

### Examples

    peaks1 <- GRanges(seqnames=c(6,6,6,6,5),
                     IRanges(start=c(1543200,1557200,1563000,1569800,167889600),
                             end=c(1555199,1560599,1565199,1573799,167893599),
                             names=c("p1","p2","p3","p4","p5")),
                     strand="+",
                     score=1:5, id=letters[1:5])
    peaks2 <- GRanges(seqnames=c(6,6,6,6,5),
                      IRanges(start=c(1549800,1554400,1565000,1569400,167888600),
                              end=c(1550599,1560799,1565399,1571199,167888999),
                              names=c("f1","f2","f3","f4","f5")),
                      strand="+",
                      score=6:10, id=LETTERS[1:5])
    ol <- findOverlapsOfPeaks(peaks1, peaks2)
    addMetadata(ol)

[Package ChIPpeakAnno version 3.18.2 Index]