enableMotifLogoPopups,igvR-method {igvR} | R Documentation

## turn mottif log popups on or off

### Description

Some tracks represent transcription factor binding sites, traditionally represented as a motif logo. use this method to enable that capability - which depends upon a properly constructed tbl.regions data.frame in a DataFrameAnnotationTrack: in addition to the usual (and mandatory) chrom, start, and end columns. To enable track-click popups over binding site, tbl.regions data.frame must also have a "name" column, which this format, by example: "MotifDb::Hsapiens-HOCOMOCOv10-MEF2C_HUMAN.H10MO.C" The first part of the name, "MotifDb::", tells igv you want to view the specified MotifDb pwm (motif logo, a matrix) when the binding site track element is clicked.

Limitations: This method only works after a call to setGenome(igv, "your genome of interest"). It only works with DataFrameAnnotationTrack objects (for now)

### Usage

    ## S4 method for signature 'igvR'
    enableMotifLogoPopups(obj, status)

### Arguments

`obj` | An object of class igvR
`status` | TRUE or FALSE

### Examples

    if(interactive()){
       igv <- igvR()
       setGenome(igv, "hg38")
       new.region <- "chr5:88,882,214-88,884,364"
       showGenomicRegion(igv, new.region)
       base.loc <- 88883100
       element.names <- c("MotifDb::Hsapiens-HOCOMOCOv10-MEF2C_HUMAN.H10MO.C",
                          "fubar",
                          "MotifDb::Hsapiens-jaspar2018-MEF2C-MA0497.1")

       tbl.regions <- 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=element.names,
                                 score=round(runif(3), 2),
                                 strand=rep("*", 3),
                                 stringsAsFactors=FALSE)

       track <- DataFrameAnnotationTrack("dataframeTest", tbl.regions, color="darkGreen", displayMode="EXPANDED")
       displayTrack(igv, track)
       }

[Package igvR version 1.6.1 Index]