R Under development (unstable) (2025-09-02 r88773 ucrt) -- "Unsuffered Consequences"
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> library(kinship2)
Loading required package: Matrix
Loading required package: quadprog
Warning: kinship2 package is deprecated for R <= 4.5; switch functionality to Pedixplorer from BioConductor> aeq <- function(x,y) all.equal(as.vector(x), as.vector(y))
> #
> # A pedigree that can cause problems, due to a double marriage
> #
> id <- 1:20
> mom<- c(0,0,0,2,2,2,0,2,0, 0,2,2,0,2,0,2, 7,7, 11,14)
> dad<- c(0,0,0,1,1,1,0,1,0, 0,3,3,0,3,0,3, 8,8, 10,13)
> 
> temp<- makefamid(id, mom, dad)
> aeq(temp, pmin(temp,1))
[1] TRUE
> 
> proc.time()
   user  system elapsed 
   0.75    0.14    0.87