Thanks for the confirmation Andy. It would be great if one could specify a specific column as the unique ID to be returned and/or display the input row, along with the predictions. Thanks for the quick reply and looking forward to the patch!
Cheers, Dennis On Tue, Dec 7, 2010 at 12:00 PM, Liaw, Andy <andy_l...@merck.com> wrote: > The order in the output correspond to the order of the input. I will > patch the code so that it grabs the row names of the input (if exist). > If you specify type="prob", it already labels the rows by the input row > names. > >> -----Original Message----- >> From: r-help-boun...@r-project.org >> [mailto:r-help-boun...@r-project.org] On Behalf Of Dennis Duro >> Sent: Tuesday, December 07, 2010 11:46 AM >> To: r-help@r-project.org >> Subject: [R] randomForest: How to append ID column along with >> predictions >> >> Hi all, >> >> When running a prediction using RF on another data, I get two columns >> returned: row number(?) and predicted class. Is there a way of >> appending the unique row value from an ID column in the dataframe to >> the predictions instead of the row number? I'm assuming that the >> returned results follow the data frame in that the first result >> returned equals the first entry in the dataframe. >> >> i.e., instead of a prediction output like this: >> >> 1, ants >> 2, ants >> 3, bees >> 4, ants >> >> I'd like the first column to pull IDs from the dataframe associated >> with each row (row number in parenthesis for illustration): >> >> (1) 1130, ants >> (2) 1130, ants >> (3) 2139, bees >> (4) 1130, ants >> >> This is likely a simple procedure, but I haven't been able to get >> anything to work. Any help would be appreciated! >> >> Cheers, >> >> Dennis >> >> ______________________________________________ >> 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. >> > Notice: This e-mail message, together with any attachments, contains > information of Merck & Co., Inc. (One Merck Drive, Whitehouse Station, > New Jersey, USA 08889), and/or its affiliates Direct contact information > for affiliates is available at > http://www.merck.com/contact/contacts.html) that may be confidential, > proprietary copyrighted and/or legally privileged. It is intended solely > for the use of the individual or entity named on this message. If you are > not the intended recipient, and have received this message in error, > please notify us immediately by reply e-mail and then delete it from > your system. > > ______________________________________________ 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.
