Calculate percent salt adducts

Description

Function to calculate ratio of salt adduct peak heights to reference/unmodified peaks

Usage

calcPercentAdduct(peaks)

Arguments

Details

Salt adducts (either Na or K) are identified and compared to each of their unmodified reference peaks

Value

Returns a list of numerical values corresponding to the ratios of salt adduct peak heights to their unmodified reference peaks

Author(s)

Reid F. Thompson (rthompso@aecom.yu.edu), John M. Greally (jgreally@aecom.yu.edu)

Examples

data(MassArray.example.data)
adduct.ratios <- calcPercentAdduct(MassArray.example.data$samples[[1]]$peaks)
median(adduct.ratios)

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.

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'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(MassArray)
> png(filename="/home/ddbj/snapshot/RGM3/R_BC/result/MassArray/calcPercentAdduct.Rd_%03d_medium.png", width=480, height=480)
> ### Name: calcPercentAdduct
> ### Title: Calculate percent salt adducts
> ### Aliases: calcPercentAdduct
> ### Keywords: arith attribute
> 
> ### ** Examples
> 
> data(MassArray.example.data)
> adduct.ratios <- calcPercentAdduct(MassArray.example.data$samples[[1]]$peaks)
> median(adduct.ratios)
[1] 0.1648997
> 
> 
> 
> 
> 
> dev.off()
null device 
          1 
>