rowTabulates {MatrixGenerics}R Documentation

Tabulates the values in a matrix-like object by row (column)

Description

Tabulates the values in a matrix-like object by row (column).

Usage

rowTabulates(x, rows = NULL, cols = NULL, values = NULL, ..., useNames = NA)

## S4 method for signature 'matrix_OR_array_OR_table_OR_numeric'
rowTabulates(x, rows = NULL, cols = NULL, values = NULL, ..., useNames = NA)

## S4 method for signature 'ANY'
rowTabulates(x, rows = NULL, cols = NULL, values = NULL, ..., useNames = NA)

colTabulates(x, rows = NULL, cols = NULL, values = NULL, ..., useNames = NA)

## S4 method for signature 'matrix_OR_array_OR_table_OR_numeric'
colTabulates(x, rows = NULL, cols = NULL, values = NULL, ..., useNames = NA)

## S4 method for signature 'ANY'
colTabulates(x, rows = NULL, cols = NULL, values = NULL, ..., 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.

values

the values to search for.

...

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.

Details

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

Value

a numeric NxJ (KxJ) matrix, where N (K) is the number of rows (columns) for which the J values are calculated.

See Also

Examples

  mat <- matrix(rpois(15, lambda = 3), nrow = 5, ncol = 3)
  mat[2, 1] <- NA_integer_
  mat[3, 3] <- 0L
  mat[4, 1] <- 0L

  print(mat)

  rowTabulates(mat)
  colTabulates(mat)

  rowTabulates(mat, values = 0)
  colTabulates(mat, values = 0)


[Package MatrixGenerics version 1.8.1 Index]