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Last data update: 2014.03.03

R: Creates a MassPeaks object.

createMassPeaks

R Documentation

Creates a MassPeaks object.

Description

This function creates a MassPeaks object. Normally it shouldn't called by the user. Try detectPeaks,MassSpectrum-method instead.

Usage

createMassPeaks(mass, intensity, snr=rep.int(NA_real_, length(intensity)),
                metaData=list())

Arguments

`mass`	`vector`, mass or mass-to-charge ratio.
`intensity`	`vector`, intensities for measured mass-to-charge ratios.
`snr`	`vector`, signal-to-noise ratios for intensity values.
`metaData`	`list`, some metadata to describe the peaks.

Value

Returns a MassPeaks object.

Author(s)

Sebastian Gibb mail@sebastiangibb.de

Examples

## load package
library("MALDIquant")

## create a MassPeaks object by default constructor
s <- createMassPeaks(mass=1:100, intensity=rnorm(100)^2,
                     metaData=list(name="example peaks"))

## show some details
s

Results


R version 3.3.1 (2016-06-21) -- "Bug in Your Hair"
Copyright (C) 2016 The R Foundation for Statistical Computing
Platform: x86_64-pc-linux-gnu (64-bit)

R is free software and comes with ABSOLUTELY NO WARRANTY.
You are welcome to redistribute it under certain conditions.
Type 'license()' or 'licence()' for distribution details.

R is a collaborative project with many contributors.
Type 'contributors()' for more information and
'citation()' on how to cite R or R packages in publications.

Type 'demo()' for some demos, 'help()' for on-line help, or
'help.start()' for an HTML browser interface to help.
Type 'q()' to quit R.

> library(MALDIquant)

This is MALDIquant version 1.15
Quantitative Analysis of Mass Spectrometry Data
 See '?MALDIquant' for more information about this package.

> png(filename="/home/ddbj/snapshot/RGM3/R_CC/result/MALDIquant/createMassPeaks-functions.Rd_%03d_medium.png", width=480, height=480)
> ### Name: createMassPeaks
> ### Title: Creates a MassPeaks object.
> ### Aliases: createMassPeaks
> ### Keywords: methods
> 
> ### ** Examples
> 
> ## load package
> library("MALDIquant")
> 
> ## create a MassPeaks object by default constructor
> s <- createMassPeaks(mass=1:100, intensity=rnorm(100)^2,
+                      metaData=list(name="example peaks"))
> 
> ## show some details
> s
S4 class type            : MassPeaks            
Number of m/z values     : 100                  
Range of m/z values      : 1 - 100              
Range of intensity values: 6.074e-05 - 6.694e+00
Range of snr values      : NA - NA              
Memory usage             : 3.336 KiB            
Name                     : example peaks        
> 
> 
> 
> 
> 
> dev.off()
null device 
          1 
>