levelplot-methods {xcms} | R Documentation

## Plot log intensity image of a xcmsRaw object

### Description

Create an image of the raw (profile) data m/z against retention time, with the intensity color coded.

### Arguments

`x` | xcmsRaw object.
`log` | Whether the intensity should be log transformed.
`col.regions` | The color ramp that should be used for encoding of the intensity.
`rt` | wheter the original (`rt="raw"`) or the corrected (`rt="corrected"`) retention times should be used.
`...` | Arguments for `profRange`.

### Methods

x = "xcmsRaw"

  `levelplot(x, log=TRUE, col.regions=colorRampPalette(brewer.pal(9, "YlOrRd"))(256), ...)`

x = "xcmsSet"

  `levelplot(x, log=TRUE, col.regions=colorRampPalette(brewer.pal(9, "YlOrRd"))(256), rt="raw", ...)`

### Author(s)

Johannes Rainer, johannes.rainer@eurac.edu

### See Also

`xcmsRaw-class`, `xcmsSet-class`

[Package xcms version 3.16.1 Index]