[BioC] Rank Product

[Nadine Ketchandji]

Hello you,
i have a problem using Rankproduct:
I read the papers of Rainer Breitling and the Rank Product Vignetes but 
still have questions about this method

1. I tried to calculate the Rank product in Excell (as explain in the paper 
of Rainer Breitling) using a small data set,  i didn't get the same results 
as calculating it with R-Programm.
Can somebody help me?

2. How can i understand the results obtaining from Rankproduct
for example:
class1 = c(rep(0,40))
class2 =c( rep(1, 24))

cl<-c(rep(0,40), rep(1,24))
Table 1 class1<class2: Is that the up-regulated genes in classs1 compare to 
class 2?

Table 2: class1>class2: Is that the down-regulated genes in class1 compare 
to class2?


3. How does R-Programm calculates the RP/Rsum?

Thanks for your help

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