plotAssayDensities-methods: Plot Densities for any assay within a SummarizedExperiment

In steveped/chipExtra: Additional functions for working with ChIP-Seq data

Plot Densities for any assay within a SummarizedExperiment

Description

Plot Densities for any assay within a SummarizedExperiment

Usage

plotAssayDensities(x, ...)

## S4 method for signature 'SummarizedExperiment'
plotAssayDensities(
  x,
  assay = "counts",
  colour,
  linetype,
  group,
  trans = NULL,
  n_max = Inf,
  ...
)

Arguments

x	A SummarizedExperiment object
...	Passed to density
assay	An assay within x
colour	Optional column in colData to colour lines by. To remove any colours, set this argument to NULL
linetype	Any optional column in colData used to determine linetype
group	Used by geom_line. Defaults to the sample names but setting to NULL will over-write this and only groups specified by colour or linetype will be drawn
trans	character(1). Any transformative function to be applied to the data before calculating the density, e.g. trans = "log2"
n_max	Maximum number of points to use when calculating densities

Details

Uses ggplot2 to create a density plot for all samples within the selected assay

Value

A ggplot2 object. Scales and labels can be added using conventional ggplot2 syntax.

Examples

data("se")
se$treatment <- c("E2", "E2", "E2", "E2DHT", "E2DHT", "E2DHT")
## Plot individual samples
plotAssayDensities(se, colour = "treatment")
## Plot combined within treatment groups
plotAssayDensities(se, colour = "treatment", group = "treatment")
## Use a data transformation
plotAssayDensities(se, trans = "log1p", colour = "treat")

steveped/chipExtra documentation built on May 2, 2024, 12:11 p.m.