You can try this: cbind(data.sub, p.value=apply(data.sub, 1, function(x)t.test(x)$p.value))
On 03/03/2008, Keizer_71 <[EMAIL PROTECTED]> wrote: > > Hi Everyone, > > I need some simple help. > > Here are my codes > > ##########will give me 10000 probesets#################### > data.sub = data.matrix[order(variableprobe,decreasing=TRUE),][1:10000,] > dim(data.sub) > data_output<-write.table(data.sub, file = "c://data_output.csv", sep = ",", > col.names = NA) > > When i export to excel, it shows me this. This is just a short version. > There are 1000 rows and 140 columns > > Sample_1_D Sample_1_C Sample_2_D Sample_2_C > 1 2.425509867 11.34031409 11.46868531 11.75741478 > > > Here is my question: How do create a new row and calculate the t-test so > that it will give me the p-value > > Here is what i am looking for. The p-value is not correct but just an > example. It needs to calculate the entire each row. There are 10000 rows and > 140 columns. > > thanks > Kei > > Sample_1_D Sample_1_C Sample_2_D Sample_2_C p-value > 1 2.425509867 11.34031409 11.46868531 11.75741478 > .00341111 > > I tried something like this. > > t.test(data.sub,mu=0) > > I am pretty new to R. I think it is showing me the entire p-value. > > > > -- > View this message in context: > http://www.nabble.com/Calculating-the-t-test-for-each-row-tp15808716p15808716.html > Sent from the R help mailing list archive at Nabble.com. > > ______________________________________________ > R-help@r-project.org mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide http://www.R-project.org/posting-guide.html > and provide commented, minimal, self-contained, reproducible code. > -- Henrique Dallazuanna Curitiba-Paraná-Brasil 25° 25' 40" S 49° 16' 22" O ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
