R: Implementation of BRAIN (Baffling Recursive Algorithm for...
BRAIN-package
R Documentation
Implementation of BRAIN (Baffling Recursive Algorithm for Isotope distributioN calculations)
Description
This package implements BRAIN (Baffling Recursive Algorithm for Isotope distributioN calculations) is described in full details by Claesen et al. The algorithm uses an algebraic approach (Viete's formulas, Newton identities [Macd]) which is
especially useful for large molecules due to its advantageous scaling properties.
This version of the package provides functions for calculating the aggregated isotopic distribution and center-masses masses for
each aggregated isotopic variant for chemical components built from carbon, hydrogen, oxygen, nitrogen and sulfur (e.g. peptides). The natural abundances and
molecular masses for stable isotopes of C, H, N, O, S are taken from IUPAC 1997 [Rosm].
Details
Package:
BRAIN
Type:
Package
Version:
1.4.0
Date:
2013-01-18
License:
GPL-2
LazyLoad:
yes
Author(s)
Piotr Dittwald with contribution of Dirk Valkenborg and Jurgen Claesen
Maintainer: Piotr Dittwald <piotr.dittwald@mimuw.edu.pl>
References
[Clae] Claesen J., Dittwald P., Burzykowski T. and Valkenborg D. An efficient method to calculate
the aggregated isotopic distribution and exact center-masses. JASMS, 2012, doi:10.1007/s13361-011-0326-2
[Macd] Macdonald I.G., Symmetric functions and Hall polynomials / by I. G. Macdonald. Clarendon Press; Oxford University Press, Oxford : New York, 1979.
[Rosm] K.J.R. Rosman and P.D.P. Taylor. Isotopic compositions of the elements 1997. Pure and Applied Chemistry, 70(1):217-235, 1998.
Examples
nrPeaks = 1000
aC <- list(C=23832, H=37816, N=6528, O=7031, S=170) # Human dynein heavy chain
res <- useBRAIN(aC = aC, nrPeaks = nrPeaks)
iso <- res$isoDistr
masses <- res$masses
mono <- res$monoisotopicMass
avgMass <- res$avgMass
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(BRAIN)
Loading required package: PolynomF
Loading required package: Biostrings
Loading required package: BiocGenerics
Loading required package: parallel
Attaching package: 'BiocGenerics'
The following objects are masked from 'package:parallel':
clusterApply, clusterApplyLB, clusterCall, clusterEvalQ,
clusterExport, clusterMap, parApply, parCapply, parLapply,
parLapplyLB, parRapply, parSapply, parSapplyLB
The following objects are masked from 'package:stats':
IQR, mad, xtabs
The following objects are masked from 'package:base':
Filter, Find, Map, Position, Reduce, anyDuplicated, append,
as.data.frame, cbind, colnames, do.call, duplicated, eval, evalq,
get, grep, grepl, intersect, is.unsorted, lapply, lengths, mapply,
match, mget, order, paste, pmax, pmax.int, pmin, pmin.int, rank,
rbind, rownames, sapply, setdiff, sort, table, tapply, union,
unique, unsplit
Loading required package: S4Vectors
Loading required package: stats4
Attaching package: 'S4Vectors'
The following objects are masked from 'package:base':
colMeans, colSums, expand.grid, rowMeans, rowSums
Loading required package: IRanges
Loading required package: XVector
Loading required package: lattice
> png(filename="/home/ddbj/snapshot/RGM3/R_BC/result/BRAIN/BRAIN-package.Rd_%03d_medium.png", width=480, height=480)
> ### Name: BRAIN-package
> ### Title: Implementation of BRAIN (Baffling Recursive Algorithm for
> ### Isotope distributioN calculations)
> ### Aliases: BRAIN-package BRAIN
> ### Keywords: package
>
> ### ** Examples
>
> nrPeaks = 1000
> aC <- list(C=23832, H=37816, N=6528, O=7031, S=170) # Human dynein heavy chain
> res <- useBRAIN(aC = aC, nrPeaks = nrPeaks)
> iso <- res$isoDistr
> masses <- res$masses
> mono <- res$monoisotopicMass
> avgMass <- res$avgMass
>
>
>
>
>
> dev.off()
null device
1
>