isMassObjectList-functions function

Tests a list of MassSpectrum or MassPeaks objects.

These functions test a list whether containing MassSpectrum or MassSpectrum

objects.

isMassSpectrumList(x)

isMassPeaksList(x)

Arguments

• x: object to be tested.

Returns

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

or MassPeaks objects.

Author(s)

Sebastian Gibb mail@sebastiangibb.de

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