Sohail: 1. Are they character or factor?
2. ?unlist > unique(unlist(yourframe)) -- Bert On Mon, Aug 12, 2013 at 1:23 PM, Khan, Sohail <skha...@nshs.edu> wrote: > Dear All, > > Could anyone suggest a quick way to combine all columns in a data frame into > a vector? > For example, I have a data frame of 205 columns with character data types, > many data values are repeated in all the columns. Actually, I would like to > retrieve all the unique values from this data set. My strategy is to put all > column value into a vector and then select unique from that vector. > > I would appreciate a more efficient method. > Thanks. > -Sohail > > > The information contained in this electronic e-mail transmission and any > attachments are intended only for the use of the individual or entity to whom > or to which it is addressed, and may contain information that is privileged, > confidential and exempt from disclosure under applicable law. If the reader > of this communication is not the intended recipient, or the employee or agent > responsible for delivering this communication to the intended recipient, you > are hereby notified that any dissemination, distribution, copying or > disclosure of this communication and any attachment is strictly prohibited. > If you have received this transmission in error, please notify the sender > immediately by telephone and electronic mail, and delete the original > communication and any attachment from any computer, server or other > electronic recording or storage device or medium. Receipt by anyone other > than the intended recipient is not a waiver of any attorney-client, > physician-patient or other pr! iv! > ilege. > ______________________________________________ > 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. -- Bert Gunter Genentech Nonclinical Biostatistics Internal Contact Info: Phone: 467-7374 Website: http://pharmadevelopment.roche.com/index/pdb/pdb-functional-groups/pdb-biostatistics/pdb-ncb-home.htm ______________________________________________ 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.
