Hi Payam, Here's a basic example using pointless data frames and an otherwise useless function to illustrate the issues you want
> ## Fresh R session with nothing yet defined > foo <- data.frame(matrix(1:12, ncol = 3)) > bar <- data.frame(matrix(101:112, ncol = 3)) > > objects() [1] "bar" "foo" > > myrbind <- function(names) { + df1 <- get(names[1]) + df2 <- get(names[2]) + dfrbind <- rbind(df1, df2) + dfrbind.name <- paste(names, collapse = ".") + assign(dfrbind.name, dfrbind, pos = 1) + invisible() + } > > dfnames <- c("foo", "bar", "baz") > myrbind(dfnames) > objects() [1] "bar" "dfnames" "foo" "foo.bar.baz" "myrbind" > foo.bar.baz X1 X2 X3 1 1 5 9 2 2 6 10 3 3 7 11 4 4 8 12 5 101 105 109 6 102 106 110 7 103 107 111 8 104 108 112 > HTH Steven McKinney, Ph.D. Statistician Molecular Oncology and Breast Cancer Program British Columbia Cancer Research Centre email: smckinney +at+ bccrc +dot+ ca tel: 604-675-8000 x7561 BCCRC Molecular Oncology 675 West 10th Ave, Floor 4 Vancouver B.C. V5Z 1L3 Canada -----Original Message----- From: r-help-boun...@r-project.org on behalf of Payam Minoofar Sent: Fri 6/12/2009 3:00 PM To: r-help@r-project.org Subject: [R] Referencing data frames Hi, How do I use the string content of a string variable to reference a data frame of the same name? I want to do the typical tasks of 1) building a name with a string variable and using the string variable to create a data frame (or any object) whose name is the string value of the variable and 2) pass on a string to a function as a parameter, and then use that string to refer to an existing data frame. Thanks in advance. Payam -- Payam Minoofar, Ph.D. Scientist Meissner Filtration Products 4181 Calle Tesoro Camarillo, CA 93012 USA +1 805 388 9911 +1 805 388 5948 fax payam.minoo...@meissner.com [[alternative HTML version deleted]] ______________________________________________ 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.