standardize.genes {supclust} | R Documentation |
Standardizes each column (gene) of the x
-matrix to
zero mean and unit variance. This function is not to be called by the
user, the standardization is handled internally in pelora
.
standardize.genes(exmat)
exmat |
Numeric matrix of explanatory variables (p variables in columns, n cases in rows). For example, these can be microarray gene expression data which should be standardized and then grouped. |
Returns a list containing:
x |
The standardized x -matrix |
means |
Numeric vector of length p, containing the initial
mean of each column (gene) of the x -matrix. |
sdevs |
Numeric vector of length p, containing the initial
standard deviation of each column (gene) of the x -matrix. |
Marcel Dettling, dettling@stat.math.ethz.ch
Marcel Dettling (2003) Finding Groups of Predictive Genes from Microarray Data, see http://stat.ethz.ch/~dettling/supervised.html
Marcel Dettling and Peter Bühlmann (2004). Finding Predictive Gene Groups from Microarray Data. To appear in the Journal of Multivariate Analysis.