glog {LMGene}R Documentation

Generalized log transformation function

Description

This function transforms the input values with the generalized log function.

Usage

glog(y, lambda)

Arguments

y A matrix data
lambda Parameter that should be determined

Details

Usually, matrix y is a modified matrix from an original matrix, after deducting parameter alpha. Lambda is one of the parameters that should be determined when using the glog function, and these parameters are decided by using the function tranest

Value

yt A matrix containing a transformmed values by glog

Author(s)

David Rocke and Geun-Cheol Lee

References

Durbin, B.P., Hardin, J.S., Hawkins, D.M., and Rocke, D.M. (2002) A variance-stabilizing transformation for gene-expression microarray data, Bioinformatics, 18, S105–S110.

http://www.idav.ucdavis.edu/~dmrocke/

See Also

tranest

Examples

#library
library(Biobase)
library(LMGene)

#data
data(sample.mat)
sample.mat[1:5,1:4]

GloggedSmpd<-glog(sample.mat-50,500)
GloggedSmpd[1:5,1:4]


[Package LMGene version 1.6.0 Index]