centerdata {HDTD} | R Documentation

## Centering Transposable Data

### Description

This function centers the transposable data around their sample mean matrix.

### Usage

    centerdata(datamat, N)

### Arguments

`datamat` | numeric matrix containing the transposable data.
`N` | positive integer number indicating the sample size, e.g., the number of subjects.

### Details

It is assumed that there are `nrow(datamat)` row variables and `ncol(datamat)`/`N` column variables in `datamat`. Further, `datamat` should be written in such a way that every `ncol(datamat)`/`N` consecutive columns belong to the same subject and the order of the column variables in each block is preserved across subjects.

### Value

Returns a matrix of the same size as `datamat`.

### Author(s)

Anestis Touloumis

### See Also

`covmat.hat` and `covmat.ts`.

### Examples

    data(VEGFmouse)
    ## Centering the VEGF dataset around the sample mean matrix.
    VEGFcen <- centerdata(datamat = VEGFmouse, N = 40)

[Package HDTD version 1.24.0 Index]