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### R code from vignette source 'RRHO.Rnw'
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### code chunk number 1: RRHO.Rnw:77-86
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library(RRHO)
# Create "gene" lists:
list.length <- 100
list.names <- paste('Gene',1:list.length, sep='')
gene.list1<- data.frame(list.names, sample(100))
gene.list2<- data.frame(list.names, sample(100))
# Compute overlap and significance
RRHO.example <- RRHO(gene.list1, gene.list2,
BY=TRUE, alternative='enrichment')
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### code chunk number 2: RRHO.Rnw:89-93
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# Examine Nominal (-log) pvalues
lattice::levelplot(RRHO.example$hypermat)
# Note: If lattice is available try:
# levelplot(RRHO.example$hypermat)
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### code chunk number 3: RRHO.Rnw:96-104
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# FWER corrected pvalues using 50 random permutations:
pval.testing <- pvalRRHO(RRHO.example, 50)
pval.testing$pval
# The sampling distribution of the minimum
# of the (-log) nominal p-values:
xs<- seq(0, 10, length=100)
plot(Vectorize(pval.testing$FUN.ecdf)(xs)~xs,
xlab='-log(pvalue)', ylab='ECDF', type='S')
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### code chunk number 4: RRHO.Rnw:109-113
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# Examine B-Y corrected pvalues
# Note: probably nothing will be rejected in this
# example as the data is generated from the null.
lattice::levelplot(RRHO.example$hypermat.by)
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### code chunk number 5: RRHO.Rnw:121-127
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m<- 100 ; n<- 100; k<- 50
data<- rhyper(1000, m, n, k)
pvals<- pmin(phyper(data,m,n,k, lower.tail=TRUE),
phyper(data,m,n,k, lower.tail=FALSE))
alpha<- 0.05
prop.table(table(pvals<alpha))
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### code chunk number 6: RRHO.Rnw:130-144
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getPval<- function(count,m,n,k){
the.mean<- k*m/(m+n)
if(count<the.mean){
lower<- count
upper<- 2*the.mean-count
} else{
lower<- 2*the.mean-count
upper<- count
}
phyper(q=lower, m=m, n=n, k=k, lower.tail=TRUE) +
phyper(q= upper, m=m, n=n, k=k, lower.tail=FALSE)
}
pvals<- sapply(data, getPval, m,n,k)
prop.table(table(pvals<alpha))
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### code chunk number 7: RRHO.Rnw:155-172
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size<- 500
list1<- data.frame(
GeneIdentifier=paste('gen',1:size, sep=''),
RankingVal=-log(runif(size)))
list2<- data.frame(
GeneIdentifier=paste('gen',1:size, sep=''),
RankingVal=-log(runif(size)))
list3<- data.frame(
GeneIdentifier=paste('gen',1:size, sep=''),
RankingVal=-log(runif(size)))
rrho.comparison<- RRHOComparison(list1,list2,list3,
stepsize=10,
labels=c("list1",
"list2",
"list3"),
plots=FALSE,
outputdir=temp.dir);
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### code chunk number 8: RRHO.Rnw:175-177
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## The standard RRHO map between list1 and list 3.
lattice::levelplot(rrho.comparison$hypermat1)
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### code chunk number 9: RRHO.Rnw:179-182
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## The p-value of the difference between
# (list1-list3)-(list2-list3).
lattice::levelplot(rrho.comparison$Pdiff)
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