trim-methods: Trim an AbstractMassObject object.

In MALDIquant: Quantitative Analysis of Mass Spectrometry Data

Trim an AbstractMassObject object.

Description

This method trims an AbstractMassObject object. That is useful if some mass ranges should be excluded from further analysis.

Usage

## S4 method for signature 'AbstractMassObject,numeric'
trim(object, range)
## S4 method for signature 'list,numeric'
trim(object, range, ...)
## S4 method for signature 'list,missing'
trim(object, range, ...)

Arguments

object	AbstractMassObject object or a list of AbstractMassObject objects.
range	numeric, limits of trimming (left/minimal mass, right/maximal mass). If missing it is automatically determined (largest overlapping mass range) for a list of AbstractMassObject.
...	arguments to be passed to underlying functions (currently only mc.cores is supported).

Author(s)

Sebastian Gibb [e-mail]

See Also

AbstractMassObject, MassPeaks, MassSpectrum

Website: https://strimmerlab.github.io/software/maldiquant/

Examples

## load package
library("MALDIquant")

## load example data
data("fiedler2009subset", package="MALDIquant")

## select only one spectrum
s <- fiedler2009subset[[1]]

## remove all mass lower 3000
trim(s, range=c(3000, Inf))

## remove all mass higher 8000
trim(s, range=c(0, 8000))

## remove all mass lower 3000 and higher 8000
trim(s, range=c(3000, 8000))

## choose largest overlapping mass range for all spectra
trim(fiedler2009subset)

MALDIquant documentation built on Sept. 11, 2024, 6:15 p.m.