Column-wise means and variances {Rfast2}

Column-wise means and variances of a matrix

Description

Column-wise means and variances of a matrix.

Usage

colmeansvars(x, std = FALSE, parallel = FALSE)

Arguments

x

A matrix with the data.

std

A boolean variable specyfying whether you want the variances (FALSE) or the standard deviations (TRUE) of each column.

parallel

A boolean value for parallel version.

Details

This function cacluates the column-wise means and variances (or standard deviations).

Value

A matrix with two rows. The first contains the means and the second contains the variances (or standard deviations).

Author(s)

Michail Tsagris.

R implementation and documentation: Michail Tsagris [e-mail] and Manos Papadakis [e-mail].

See Also

pooled.colVars

Examples

colmeansvars( as.matrix(iris[, 1:4]) )