R: Pairwise Sums

pair.sum {ICSNP} | R Documentation

## Pairwise Sums

### Description

Computes pairwise sums.

### Usage

    pair.sum(X)

### Arguments

`X` | a numeric matrix.

### Details

The function computes all sums of row i and row j with i < j. The function is a wrapper to a C function to do the computation quickly and does no checks concerning the input.

### Value

Matrix containing the sums.

### Author(s)

Seija Sirkiä, seija.sirkia@iki.fi

### See Also

`pair.diff`, `pair.prod`

### Examples

    X <- matrix(1:10, ncol = 2, byrow = FALSE)
    pair.sum(X)

[Package ICSNP version 1.1-0 Index]