Pairwise Sums

Description

Computes pairwise sums.

Usage

pair.sum(X)

Arguments

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 Sirki<c3><a4>, seija.sirkia@iki.fi

See Also

pair.diff, pair.prod

Examples

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

Results

R version 3.3.1 (2016-06-21) -- "Bug in Your Hair"
Copyright (C) 2016 The R Foundation for Statistical Computing
Platform: x86_64-pc-linux-gnu (64-bit)

R is free software and comes with ABSOLUTELY NO WARRANTY.
You are welcome to redistribute it under certain conditions.
Type 'license()' or 'licence()' for distribution details.

R is a collaborative project with many contributors.
Type 'contributors()' for more information and
'citation()' on how to cite R or R packages in publications.

Type 'demo()' for some demos, 'help()' for on-line help, or
'help.start()' for an HTML browser interface to help.
Type 'q()' to quit R.

> library(ICSNP)
Loading required package: mvtnorm
Loading required package: ICS
> png(filename="/home/ddbj/snapshot/RGM3/R_CC/result/ICSNP/pair.sum.Rd_%03d_medium.png", width=480, height=480)
> ### Name: pair.sum
> ### Title: Pairwise Sums
> ### Aliases: pair.sum
> ### Keywords: manip
> 
> ### ** Examples
> 
> X <- matrix(1:10, ncol = 2, byrow = FALSE)
> pair.sum(X)
      [,1] [,2]
 [1,]    3   13
 [2,]    4   14
 [3,]    5   15
 [4,]    6   16
 [5,]    5   15
 [6,]    6   16
 [7,]    7   17
 [8,]    7   17
 [9,]    8   18
[10,]    9   19
> 
> 
> 
> 
> 
> dev.off()
null device 
          1 
>