On 13-06-17 5:02 PM, Davis, Brian wrote:
I have a collection of .RData files that have result objects that I would like to combine. Specifically, skatCohort objects from the skatMeta package, but I've run into a similar issue with simple data.frames also.If I run something like FILES <- list.files(path="/path/to/my/results", pattern=".RData$", full.names=TRUE) combined <- NULL for (FILE in FILES) { load(FILE) if (!is.null(combined)) { combined <- c(combined, res) } else { combined <- res } } I get all my objects combined. However, if I wrap this into a function I get the following error c_objects <- function(FILES) { combined <- NULL for (FILE in FILES) { load(FILE) if (!is.null(combined)) { combined <- c(combined, res) } else { combined <- res } } return(combined) } combined_results <- c_objects(FILES) Error in eval(expr, envir, enclos) : object 'combined' not found How should I write this function such that it can find "combined". I've tried reading the help on envirnaments, and the exisits function but I haven't been able to figure this out. Are there any other resources to read up on this?
You are doing something that you aren't showing us: I don't see any calls to eval(), but it's eval() that generated the error.
Calling traceback() after the error might be informative. Duncan Murdoch ______________________________________________ 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.
