trackSize,DataFrameAnnotationTrack-method {igvR} | R Documentation

## Retrieve the size of the DataFrameAnnotationTrack

### Description

Retrieve the size of the DataFrameAnnotationTrack

### Usage

    ## S4 method for signature 'DataFrameAnnotationTrack'
    trackSize(obj)

### Arguments

`obj` | An object of class UCSCBedAnnotationTrack

### Value

The number of elements

### Examples

    base.loc <- 88883100
    tbl <- data.frame(chrom=rep("chr5", 3),
                      start=c(base.loc, base.loc+100, base.loc + 250),
                      end=c(base.loc + 50, base.loc+120, base.loc+290),
                      name=c("a", "b", "c"),
                      score=runif(3),
                      strand=rep("*", 3),
                      stringsAsFactors=FALSE)

    track <- DataFrameAnnotationTrack("dataframeTest", tbl)
    trackSize(track)

[Package igvR version 1.6.1 Index]