jggrad2 {LMGene} | R Documentation |
This function returns a Jacobian-corrected data with the given parameters lambda and alpha.
jggrad2(y, lambda, alpha)
y |
A matrix data containing array information |
lambda |
A parameter for glog transformation |
alpha |
A parameter for glog transformation |
The input arguments here would be rarely dealt by users directly.
data_matrix |
A matrix containing Jacobian-corrected data, gradient data by lambda and gradient data by alpha |
David Rocke and Geun-Cheol Lee
B. Durbin and D.M. Rocke, (2003) Estimation of Transformation Parameters for Microarray Data, Bioinformatics, 19, 1360-1367.
http://www.idav.ucdavis.edu/~dmrocke/
#library library(Biobase) library(LMGene) #data data(sample.mat) dim(sample.mat) JCSmpd<-jggrad2(sample.mat, 500, 50) dim(JCSmpd)