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

In Bioconductor/MatrixGenerics: S4 Generic Summary Statistic Functions that Operate on Matrix-Like Objects

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 = TRUE)

## 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 = TRUE)

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

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

## 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 = TRUE)

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

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, missing values (NA or NaN) are omitted from the calculations.
...	Additional arguments passed to specific methods.
useNames	If TRUE (default), names attributes of result are set. Else if FALSE, no naming support is done.
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, table, or numeric call matrixStats::rowProds / matrixStats::colProds.

Value

Returns a numeric vector of length N (K).

See Also

• matrixStats::rowProds() and matrixStats::colProds() which are used when the input is a matrix or numeric vector.

• For sums across rows (columns), see rowSums2() (colSums2())

• base::prod().

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)

Bioconductor/MatrixGenerics documentation built on April 19, 2024, 8:19 a.m.