[R] How to program an error into an if-then statement

Hello! I am running a loop (for a range of dates) and in this loop I am reading in different files - based on a date that is part of the file name. However, for some of the dates, I have no file (no way to know which dates). So, when I try to read it in I get an error: Error in file(file, rt) :

Re: [R] How to program an error into an if-then statement

Take a look in ?try and ?tryCatch myfile - tryCatch(read.csv(myfilename), error = invisible) myfile$message On Tue, Nov 9, 2010 at 2:55 PM, Dimitri Liakhovitski dimitri.liakhovit...@gmail.com wrote: Hello! I am running a loop (for a range of dates) and in this loop I am reading in

Re: [R] How to program an error into an if-then statement

-Original Message- From: r-help-boun...@r-project.org [mailto:r-help-boun...@r- project.org] On Behalf Of Dimitri Liakhovitski Sent: Tuesday, November 09, 2010 8:56 AM To: r-help Subject: [R] How to program an error into an if-then statement Hello! I am running a loop (for a

Re: [R] How to program an error into an if-then statement

Thanks a lot, everybody- it's very helpful! On Tue, Nov 9, 2010 at 12:20 PM, Nordlund, Dan (DSHS/RDA) nord...@dshs.wa.gov wrote: -Original Message- From: r-help-boun...@r-project.org [mailto:r-help-boun...@r- project.org] On Behalf Of Dimitri Liakhovitski Sent: Tuesday, November 09,