The function computes all elementwise products 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.
X <- matrix(1:10, ncol = 2, byrow = FALSE)
pair.prod(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)
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> library(ICSNP)
Loading required package: mvtnorm
Loading required package: ICS
> png(filename="/home/ddbj/snapshot/RGM3/R_CC/result/ICSNP/pair.prod.Rd_%03d_medium.png", width=480, height=480)
> ### Name: pair.prod
> ### Title: Pairwise Products
> ### Aliases: pair.prod
> ### Keywords: manip
>
> ### ** Examples
>
> X <- matrix(1:10, ncol = 2, byrow = FALSE)
> pair.prod(X)
[,1] [,2]
[1,] 2 42
[2,] 3 48
[3,] 4 54
[4,] 5 60
[5,] 6 56
[6,] 8 63
[7,] 10 70
[8,] 12 72
[9,] 15 80
[10,] 20 90
>
>
>
>
>
> dev.off()
null device
1
>