rowProds {MatrixGenerics}R Documentation

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

Description

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

Usage

rowProds(x, rows = NULL, cols = NULL, na.rm = FALSE, ..., useNames = NA)

## S4 method for signature 'matrix_OR_array_OR_table_OR_numeric'
rowProds(x, rows = NULL,
  cols = NULL, na.rm = FALSE, method = c("direct", "expSumLog"), ...,
  useNames = NA)

## S4 method for signature 'ANY'
rowProds(x, rows = NULL, cols = NULL, na.rm = FALSE, ..., useNames = NA)

colProds(x, rows = NULL, cols = NULL, na.rm = FALSE, ..., useNames = NA)

## S4 method for signature 'matrix_OR_array_OR_table_OR_numeric'
colProds(x, rows = NULL,
  cols = NULL, na.rm = FALSE, method = c("direct", "expSumLog"), ...,
  useNames = NA)

## S4 method for signature 'ANY'
colProds(x, rows = NULL, cols = NULL, na.rm = FALSE, ..., useNames = NA)

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.

na.rm

If TRUE, NAs are excluded first, otherwise not.

...

Additional arguments passed to specific methods.

useNames

If NA, the default behavior of the function about naming support is remained. If FALSE, no naming support is done. Else if TRUE, names attributes of result are set.

method

A character vector of length one that specifies the how the product is calculated. Note, that this is not a generic argument and not all implementation have to provide it.

Details

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

Value

Returns a numeric vector of length N (K).

See Also

Examples

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

[Package MatrixGenerics version 1.8.1 Index]