rowTabulates: Tabulates the values in a matrix by row (column)

In matrixStats: Methods that apply to rows and columns of a matrix

Description

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

Usage

  ## S3 method for class 'matrix'
rowTabulates(x, values=NULL, ...)
  ## S3 method for class 'matrix'
colTabulates(x, values=NULL, ...)

Arguments

x	An integer or raw NxK matrix.
values	An vector of J values of count. If NULL, all (unique) values are counted.
...	Not used.

Value

Returns a NxJ (KxJ) matrix where N (K) is the number of row (column) vectors tabulated and J is the number of values counted.

Author(s)

Henrik Bengtsson

Examples

x <- matrix(1:5, nrow=10, ncol=5)
print(x)
print(rowTabulates(x))
print(colTabulates(x))
# Count only certain values
print(rowTabulates(x, values=1:3))


y <- as.raw(x)
dim(y) <- dim(x)
print(y)
print(rowTabulates(y))
print(colTabulates(y))

matrixStats documentation built on May 2, 2019, 4:52 p.m.