R: Column and row-wise means of a matrix

Column and row-wise means of a matrix {Rfast} | R Documentation

## Column and row-wise means of a matrix

### Description

Column and row-wise means of a matrix.

### Usage

    colmeans(x, parallel = FALSE)
    rowmeans(x)
    colhameans(x, parallel = FALSE)
    rowhameans(x)

### Arguments

`x` | A numerical matrix with data.
`parallel` | Do you want to do it in parallel in C++? TRUE or FALSE.

### Value

A vector with the column or row arithmetic or harmonic means.

### Author(s)

Manos Papadakis

R implementation and documentation: Manos Papadakis <papadakm95@gmail.com>.

### See Also

`colsums, rowsums, colMins, colMedians, colMads`

### Examples

    x <- matrix(rpois(100 * 100, 10),ncol = 100)
    x1 <- colmeans(x)
    x2 <- colMeans(x)
    all.equal(x1,x2)

    x1 <- rowmeans(x)
    x2 <- rowMeans(x)
    all.equal(x1,x2)
    system.time( colhameans(x) )
    system.time( rowhameans(x) )

    x<-x1<-x2<-NULL

[Package Rfast version 2.0.4 Index]