isMassObjectList-functions: Tests a list of MassSpectrum or MassPeaks objects.

In MALDIquant: Quantitative Analysis of Mass Spectrometry Data

Tests a list of MassSpectrum or MassPeaks objects.

Description

These functions test a list whether containing MassSpectrum or MassSpectrum objects.

Usage

isMassSpectrumList(x)

isMassPeaksList(x)

Arguments

x	object to be tested.

Value

Returns TRUE or FALSE depending on whether its argument is a list of MassSpectrum or MassPeaks objects.

Author(s)

Sebastian Gibb [e-mail]

See Also

MassPeaks, MassSpectrum, AbstractMassObject

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

Examples

## load package
library("MALDIquant")

## create list
p <- list()

## test list
isMassPeaksList(p) # returns FALSE

## create two MassPeaks objects and add them to the list
p <- createMassPeaks(mass=1:100, intensity=1:100,
                     metaData=list(name="example 1"))
p <- createMassPeaks(mass=1:100, intensity=1:100,
                     metaData=list(name="example 2"))

## test list
isMassPeaksList(p)    # returns TRUE
isMassSpectrumList(p) # returns FALSE

MALDIquant documentation built on March 31, 2023, 10:40 p.m.