Hi Without data it is only a guess. > > I found out something strange when I used the same thing on another data > file. > > In a excel file I have same data too and there I asked in a certain column > what values where above the 7.5. Result: 206. > Now I have done the same thing in R and I get as result: 400.
I was tempted to assign it to FAQ 7.31 about finite precision of decimals. However such a big difference is rather strange. > > My code: > # Find values above 7.5. > C = x[x => 7.5] > > # Calculate length. > number = length[C] Shouldn't it be length(C)? > > # print outcome > number I personally suspect NA values which are retained after subsetting. Output from str(your object) could help. Maybe you want only number of values. For that you shall to use sum(!is.na(C)) But maybe I am on a wrong track. Regards Petr > > Or could it have something to do that I have calculated the log2 value from > a value dat was like: 7.84394 -01 However I don't think that was the problem > since I cheaked the first 10 log2 values, and they where correct. > > I just don't understand why the answer is now higer, 400 and not 206..... > > -- > View this message in context: http://r.789695.n4.nabble.com/Sort-out- > number-on-value-tp4573467p4573764.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. ______________________________________________ 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.