collapseSeqs {packFinder} | R Documentation

## Collapse Overlapping Sequences

### Description

The sequences predicted by `packSearch` often overlap, which may be due to the presence of closely interspersed elements or false TIR identification. In such cases, these elements can be combined using `link[GenomicRanges:GRanges-class]{GRanges}` in order to collapse overlapping elements, preventing over-estimation of transposon numbers. Also removes duplicate elements that have been generated in the case of multiple searches.

### Usage

    collapseSeqs(packMatches, Genome)

### Arguments

`packMatches` | A dataframe containing genomic ranges and names referring to sequences to be extracted. This dataframe is in the format produced by coercing a `link[GenomicRanges:GRanges-class]{GRanges}` object to a dataframe: `data.frame(GRanges)`. Must contain the following features: start - the predicted element's start base sequence position. end - the predicted element's end base sequence position. seqnames - character string referring to the sequence name in `Genome` to which `start` and `end` refer to.
`Genome` | A DNAStringSet object containing sequences referred to in `packMatches` (the object originally used to predict the transposons `packSearch`).

### Value

A set of non-overlapping transposon sequences in the format of the input dataframe.

### Author(s)

Jack Gisby

### See Also

`packSearch`, `link[GenomicRanges:GRanges-class]{GRanges}`

### Examples

    data(packMatches)
    data(arabidopsisThalianaRefseq)

    packMatches$start <- 1
    packMatches$end <- 10

    collapseSeqs(packMatches, arabidopsisThalianaRefseq)

[Package packFinder version 1.2.0 Index]