R: Calculates an order statistic for each row (column) of a...

colOrderStats,dgCMatrix-method {sparseMatrixStats}

R Documentation

Calculates an order statistic for each row (column) of a matrix-like object

Description

Calculates an order statistic for each row (column) of a matrix-like object.

Usage

## S4 method for signature 'dgCMatrix'
colOrderStats(x, rows = NULL, cols = NULL, which = 1, na.rm = FALSE)

## S4 method for signature 'dgCMatrix'
rowOrderStats(x, rows = NULL, cols = NULL, which = 1, na.rm = FALSE)

Arguments

`x`	An NxK matrix-like object.
`rows`	A `vector` indicating the subset of rows (and/or columns) to operate over. If `NULL`, no subsetting is done.
`cols`	A `vector` indicating the subset of rows (and/or columns) to operate over. If `NULL`, no subsetting is done.
`which`	An integer index in [1,K] ([1,N]) indicating which order statistic to be returned
`na.rm`	If TRUE, NAs are excluded first, otherwise not.

Details

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

Value

Returns a numeric vector of length N (K).

Examples

mat <- matrix(rnorm(15), nrow = 5, ncol = 3)
    mat[2, 1] <- 2
    mat[3, 3] <- Inf
    mat[4, 1] <- 0
    
    print(mat)
    
    rowOrderStats(mat, which = 1)
    colOrderStats(mat, which = 3)

[Package sparseMatrixStats version 1.2.1 Index]