On May 20, 2010, at 11:24 AM, Sabatier, Jennifer F. (CDC/OID/NCHHSTP) wrote:
Hi R-help, I posted about this late yesterday but got no response. I may have put TMI in the original request. Not to mention I couldn't cut and paste yesterday because I was working R off a non-network computer while asking for help on a network computer. Essentially, I have this user-defined function: test <- function(X){ chisq <- svychisq(~X + SEX, design=audit,
Did you really have a variable name "X" inside the object that you are giving a temporary name of "X" to. Seems confusing if that were your choice.
statisic="adjWald", round=4) } test(con)
I do not know the answer, but I'm not sure that anyone including Lumley could answer it with the proffered information:
Perhaps you should include the code used to create "audit" as well as the results of str() on the data argument to design when audit was created. I am guessing that "SEX" is not available inside the function and that you should have written:
test <- function(Z){ chisq <- svychisq(~X + SEX, design=Z, statistic="adjWald", round=4) } -- David.
"con" is a data variable in my design object audit. When I just run: chisq <- svychisq(~X + SEX, design=audit, statisic="adjWald", round=4) It works just fine. It's only when it's nested in the function test() that it falls apart. I get this error: Error in `[.data.frame`(design$variables, , as.character(rows)) : undefined columns selected How can I solve this problem? Thanks, Jen (obviously a new R-user, as of late 2009) ______________________________________________ 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.
David Winsemius, MD West Hartford, CT ______________________________________________ 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.