Nothing
cMackSkil<-function(alpha,k,n,c, method=NA, n.mc=10000){
outp<-list()
outp$stat.name<-"Mack-Skillings MS"
outp$n.mc<-n.mc
outp$k<-k
outp$n<-n
outp$c<-c
if(alpha>1||alpha<0||!is.numeric(alpha)){
cat('Error: Check alpha value! \n')
return(alpha)
}
outp$alpha<-alpha
num.obs<-outp$k*outp$n*outp$c
##When the user doesn't give us any indication of which method to use, try to pick one.
if(is.na(method)){
if(factorial(outp$c*outp$k)^outp$n<=10000){
method<-"Exact"
}
if(factorial(outp$c*outp$k)^outp$n>10000){
method<-"Monte Carlo"
}
}
#####################################################################
outp$method<-method
possible.ranks<-t(matrix(rep(1:(outp$c*outp$k),outp$n),ncol=outp$n,byrow=F))
MS.calc<-function(obs.data){
S.vec<-NULL
for(i in 1:outp$k){
S.vec<-c(S.vec,sum(obs.data[,((i-1)*outp$c+1):(i*outp$c)])/outp$c)
}
MS.stat<-12/(outp$k*(num.obs+outp$n))*sum(S.vec^2)-3*(num.obs+outp$n)
return(MS.stat)
}
if(outp$method=="Exact"){
possible.perm<-multCh7(possible.ranks)
exact.dist<-apply(possible.perm,3,MS.calc)
MS.vals<-sort(unique(exact.dist))
MS.probs<-as.numeric(table(exact.dist))/(factorial(outp$c*outp$k)^outp$n)
MS.dist<-cbind(MS.vals,MS.probs)
upper.tails<-cbind(rev(MS.dist[,1]),cumsum(rev(MS.dist[,2])))
outp$cutoff.U<-upper.tails[max(which(upper.tails[,2]<=alpha)),1]
outp$true.alpha.U<-upper.tails[max(which(upper.tails[,2]<=alpha)),2]
}
if(outp$method=="Monte Carlo"){
mc.perm<-matrix(ncol=(outp$c*outp$k),nrow=outp$n)
mc.stats<-numeric(n.mc)
for(i in 1:n.mc){
for(j in 1:outp$n){
mc.perm[j,]<-sample(possible.ranks[j,])
}
mc.stats[i]<-round(MS.calc(mc.perm),5)
}
mc.vals<-sort(unique(mc.stats))
mc.dist<-as.numeric(table(mc.stats))/n.mc
upper.tails<-cbind(rev(mc.vals),cumsum(rev(mc.dist)))
outp$cutoff.U<-upper.tails[max(which(upper.tails[,2]<=alpha)),1]
outp$true.alpha.U<-upper.tails[max(which(upper.tails[,2]<=alpha)),2]
}
if(outp$method=="Asymptotic"){
outp$p.val<-qchisq(1-alpha,outp$k-1)
}
class(outp)<-"NSM3Ch7c"
outp
}
Any scripts or data that you put into this service are public.
Add the following code to your website.
For more information on customizing the embed code, read Embedding Snippets.