On Thu, Dec 3, 2009 at 3:52 PM, John Filben <johnfil...@yahoo.com> wrote: > Can R support data manipulation programming that is available in the SAS > datastep? Specifically, can R support the following: > - Read multiple dataset one record at a time and compare values from > each; then base on if-then logic write to multiple output files > - Load a lookup table and then process a different file; based on > if-then logic, access and lookup values in the table > - Support modular “gosub”programming > - Sort files > - Date math and conversions > - Would it be able to support the following type of logic: > o Start > § Read Record from File 1 > § Read Record from File 2 > § Match > · If Key 1 <> Key 2 and Key 1 < Key 2, Write to output file A > · If Key 1 = Key 2, Write to output file B > · If Key 1 <> Key 2 and Key 1 > Key 2, Write to output file C§ Goto > Start until File 1 Done
Yes. Hadley -- http://had.co.nz/ ______________________________________________ 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.
