MALDIquant (version 1.0)

peaks: Example Mass Spectra (extracted peaks)

Description

This dataset contains 16 example peak lists. They are extracted out of spectra. It is used to demonstrate the usage of MALDIquant-package.

Usage

peaks

format

A list containing 16 MassPeaks-class objects.

See Also

MassPeaks-class, spectra

Examples

## generated as follow:

## load library
library("MALDIquant");

## load example data
data("spectra", package="MALDIquant");

## running typical workflow

## transform intensities
t<- lapply(spectra, transformIntensity, fun=sqrt);

## smoothing function
movingAvg <- function(y) {
    return(filter(y, rep(1, 5)/5, sides=2));
}

## smooth spectra
s <- lapply(t, transformIntensity, fun=movingAvg);

## baseline correction
b <- lapply(s, removeBaseline);

## detect peaks
peaks <- lapply(b, detectPeaks);