rowSums2: Calculates the sum for each row (column) of a matrix-like...

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

Description

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

Usage

rowSums2(x, rows = NULL, cols = NULL, na.rm = FALSE, ...)

## S4 method for signature 'matrix_OR_array_OR_table_OR_numeric'
rowSums2(x, rows = NULL, cols = NULL, na.rm = FALSE, dim. = dim(x), ...)

## S4 method for signature 'ANY'
rowSums2(x, rows = NULL, cols = NULL, na.rm = FALSE, ...)

colSums2(x, rows = NULL, cols = NULL, na.rm = FALSE, ...)

## S4 method for signature 'matrix_OR_array_OR_table_OR_numeric'
colSums2(x, rows = NULL, cols = NULL, na.rm = FALSE, dim. = dim(x), ...)

## S4 method for signature 'ANY'
colSums2(x, rows = NULL, cols = NULL, na.rm = FALSE, ...)

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.
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::rowSums2 / matrixStats::colSums2.

Value

Returns a numeric vector of length N (K).

See Also

• matrixStats::rowSums2() and matrixStats::colSums2() which are used when the input is a matrix or numeric vector.

• For mean estimates, see rowMeans2() and rowMeans().

• base::sum().

Examples

  mat <- matrix(rnorm(15), nrow = 5, ncol = 3)
  mat[2, 1] <- NA
  mat[3, 3] <- Inf
  mat[4, 1] <- 0
  
  print(mat)
  
  rowSums2(mat)
  colSums2(mat)
  

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