Dear R Helpers, I am trying to find a way to identify all the objects in my environment that are all caps and then end with .f. I can do the all caps part pretty easily, but I have tried a number of variations on the \ and can't get a recognition of that operator. As a simple example
A.f<-"foo1" AA.f<-"foo2" aa.f<-"foo3" A.a<-"foo4" ls() [1] "A.a" "A.f" "aa.f" "AA.f" temp1<-ls(pattern="[A-Z]") temp1 [1] "A.a" "A.f" "AA.f" > temp2<-ls(pattern=\f) Error: unexpected input in "temp2<-ls(pattern=\" The end goal is to isolate A.f and AA.f and not the others. In terms of just getting the 'ending with .f' portion, I have tried a number of variations in the pattern=\f, but can't get R to recognize what I want. Your guidance would be much appreciated. --John J. Sparks, Ph.D. ______________________________________________ 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.