rowCumprods: Calculates the cumulative product for each row (column) of a...

Description Usage Arguments Details Value See Also Examples

Description

Calculates the cumulative product for each row (column) of a matrix-like object.

Usage

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rowCumprods(x, rows = NULL, cols = NULL, ...)

## S4 method for signature 'matrix_OR_array_OR_table_OR_numeric'
rowCumprods(x, rows = NULL, cols = NULL, dim. = dim(x), ...)

## S4 method for signature 'ANY'
rowCumprods(x, rows = NULL, cols = NULL, ...)

colCumprods(x, rows = NULL, cols = NULL, ...)

## S4 method for signature 'matrix_OR_array_OR_table_OR_numeric'
colCumprods(x, rows = NULL, cols = NULL, dim. = dim(x), ...)

## S4 method for signature 'ANY'
colCumprods(x, rows = NULL, cols = NULL, ...)

Arguments

x

An NxK matrix-like object.

rows, cols

A vector indicating the subset of rows (and/or columns) to operate over. If NULL, no subsetting is done.

...

Additional arguments passed to specific methods.

dim.

An integer vector of length two specifying the dimension of x, essential when x is a numeric vector. Note, that this is not a generic argument and not all methods need provide it.

Details

The S4 methods for x of type matrix, array, or numeric call matrixStats::rowCumprods / matrixStats::colCumprods.

Value

Returns a numeric matrixwith the same dimensions as x.

See Also

Examples

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  mat <- matrix(rnorm(15), nrow = 5, ncol = 3)
  mat[2, 1] <- NA
  mat[3, 3] <- Inf
  mat[4, 1] <- 0
  
  print(mat)
  
  rowCumprods(mat)
  colCumprods(mat)
  

MatrixGenerics documentation built on Feb. 1, 2021, 2:01 a.m.