Last data update: 2014.03.03

R: Constructing a pwm object
makePWMR Documentation

Constructing a pwm object

Description

This function constructs an object of class pwm from a matrix. It checks that the matrix has correct dimensions and that columns add up to 1.0.

Usage

makePWM(pwm, alphabet="DNA")

Arguments

pwm

matrix representing the positon weight matrix

alphabet

character the alphabet making up the sequence. Currently, only "DNA" is supported.

Value

An object of class pwm.

Author(s)

Oliver Bembom, bembom@berkeley.edu

Examples

mFile <- system.file("Exfiles/pwm1", package="seqLogo")
m <- read.table(mFile)
pwm <- makePWM(m)

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
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Type 'q()' to quit R.

> library(seqLogo)
Loading required package: grid
> png(filename="/home/ddbj/snapshot/RGM3/R_BC/result/seqLogo/makePWM.Rd_%03d_medium.png", width=480, height=480)
> ### Name: makePWM
> ### Title: Constructing a pwm object
> ### Aliases: makePWM
> ### Keywords: misc
> 
> ### ** Examples
> 
> mFile <- system.file("Exfiles/pwm1", package="seqLogo")
> m <- read.table(mFile)
> pwm <- makePWM(m)
> 
> 
> 
> 
> 
> dev.off()
null device 
          1 
>