R: Column and row-wise products

Column and row-wise products {Rfast} | R Documentation

## Column and row-wise products

### Description

Column and row-wise products.

### Usage

    colprods(x, method = "direct")
    rowprods(x)

### Arguments

`x` | A matrix with numbers.
`method` | The type of colCumProds to use. For direct multiplication use "direct" or "expsumlog" for a more numerically stable, but slower way.

### Details

The product of the numbers in a matrix is returned either column-wise or row-wise.

### Value

A vector with the column or the row products.

### Author(s)

Manos Papadakis

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

### See Also

`colsums, coldiffs, colMedians`

### Examples

    x <- matrix( runif(100 * 10), ncol = 10 )
    res<-colprods(x)
    res<-rowprods(x)

    x<-NULL

[Package Rfast version 2.0.4 Index]