Thanx Steve and Tony for your help. Sachin Tony Plate <[EMAIL PROTECTED]> wrote: Works OK for me:
> x <- data.frame(a=10^(-2:7), b=10^(10:1)) > subset(x, a > 1) a b 4 1e+01 1e+07 5 1e+02 1e+06 6 1e+03 1e+05 7 1e+04 1e+04 8 1e+05 1e+03 9 1e+06 1e+02 10 1e+07 1e+01 > subset(x, a > 1 & b < a) a b 8 1e+05 1000 9 1e+06 100 10 1e+07 10 > Do you get all "numeric" for the following? > sapply(x, class) a b "numeric" "numeric" > If not, then your data frame is probably encoding the information in some way that you don't want (though if it was as factors, I would have expected a warning from the comparison operator). You might get more help by distilling your problem to a simple example that can be tried out by others. -- Tony Plate Sachin J wrote: > Hi, > > I am trying to extract subset of data from my original data frame > based on some condition. For example : (mydf -original data frame, submydf > - subset dada frame) > > >submydf = subset(mydf, a > 1 & b <= a), > > here column a contains values ranging from 0.01 to 100000. I want to > extract only those matching condition 1 i.e a > . But when i execute > this command it is not giving me appropriate result. The subset df - > submydf contains rows with 0.01 also. Please help me to resolve this > problem. > > Thanks in advance. > > Sachin > > > --------------------------------- > > [[alternative HTML version deleted]] > > ______________________________________________ > [email protected] mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html > --------------------------------- [[alternative HTML version deleted]] ______________________________________________ [email protected] mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
