geom_bar {ggbio} | R Documentation

## Segment geoms for GRanges object

### Description

Show interval data as vertical bar, width equals to interval width and use 'score' or specified 'y' as y scale.

### Usage

    ## S4 method for signature 'ANY'
    geom_bar(data, ...)
    ## S4 method for signature 'GRanges'
    geom_bar(data,..., xlab, ylab, main)

### Arguments

`data` | Typically a `GRanges` or `data.frame` object.
`...` | Extra parameters such as aes() or `color, size` passed.
`xlab` | Label for x
`ylab` | Label for y
`main` | Title for plot.

### Details

Useful for showing bed like files, when imported as GRanges, have a extra 'score' column, use it as default y, you could also specify y by using aes(y = ).

### Value

A 'Layer'.

### Examples

    ## load
    library(GenomicRanges)

    ## simul
    set.seed(123)
    gr.b <- GRanges(seqnames = "chr1", IRanges(start = seq(1, 100, by = 10),
                      width = sample(4:9, size = 10, replace = TRUE)),
                    score = rnorm(10, 10, 3), value = runif(10, 1, 100))
    gr.b2 <- GRanges(seqnames = "chr2", IRanges(start = seq(1, 100, by = 10),
                      width = sample(4:9, size = 10, replace = TRUE)),
                    score = rnorm(10, 10, 3), value = runif(10, 1, 100))
    gr.b <- c(gr.b, gr.b2)
    ## default use score as y

    ## bar
    ggplot(gr.b) + geom_bar(aes(fill = value))
    ## or
    ggplot() + geom_bar(gr.b, aes(fill = value))
    ggplot(gr.b) + geom_bar(aes(y = value))
    ## equal to
    autoplot(gr.b, geom = "bar")

[Package ggbio version 1.38.0 Index]