Because you have one too many `&'. Andy
> From: Y. C. Tao > > Why the last "which" in the following example doesn't > work? Is there a simple way to identify the indices of > array elements that meet multiple criteria? > > Thanks. > > YC Tao > > > x<-1:10 > > which(x<5) > [1] 1 2 3 4 > > which(x>2) > [1] 3 4 5 6 7 8 9 10 > > which(x<5 && x>2) > numeric(0) > > __________________________________ > > Dress up your holiday email, Hollywood style. Learn more. > > ______________________________________________ > [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 > > ______________________________________________ [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
