On Wed, 2005-06-15 at 15:58 +0200, Muhammad Subianto wrote: > Dear R-helpers, > I have dataset (data.frame) like below, > x1 x2 x3 x4 x5 x6 x7 x8 x9 ... x1200 > 0 0 0 1 1 0 0 1 1 > 1 0 0 1 1 0 0 1 1 > 0 1 0 1 1 0 0 1 1 > 1 1 0 1 1 0 0 1 1 > ... > How can I change automatically 0=no and 1=yes. > > Thank you very much in advance. > Kindly regards, > Muhammad Subianto
The easiest might be to use the following, presuming that your data frame is called 'df' and all entries are 0/1: > df V1 V2 V3 V4 V5 V6 V7 V8 V9 V10 1 1 0 1 1 1 1 0 1 1 0 2 1 0 1 0 0 0 1 1 0 0 3 0 0 1 0 1 1 1 1 1 0 4 0 0 0 0 1 1 0 1 0 0 5 1 1 1 1 0 1 0 1 1 0 6 1 0 1 1 1 1 0 1 1 1 7 0 1 1 1 0 0 1 0 1 0 8 1 1 1 1 0 0 1 1 0 0 9 1 0 1 1 1 0 1 0 1 0 10 1 0 0 1 1 1 1 1 0 1 # Use ifelse(). By default that will return a # character matrix, so coerce back to a data # frame. Note that the entries are "factors" > as.data.frame(ifelse(df == 0, "No", "Yes")) V1 V2 V3 V4 V5 V6 V7 V8 V9 V10 1 Yes No Yes Yes Yes Yes No Yes Yes No 2 Yes No Yes No No No Yes Yes No No 3 No No Yes No Yes Yes Yes Yes Yes No 4 No No No No Yes Yes No Yes No No 5 Yes Yes Yes Yes No Yes No Yes Yes No 6 Yes No Yes Yes Yes Yes No Yes Yes Yes 7 No Yes Yes Yes No No Yes No Yes No 8 Yes Yes Yes Yes No No Yes Yes No No 9 Yes No Yes Yes Yes No Yes No Yes No 10 Yes No No Yes Yes Yes Yes Yes No Yes See ?ifelse for more information. HTH, Marc Schwartz ______________________________________________ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html