Something along the lines of tmpfun <- function(chvec) chvec[!is.na(chvec)]
apply( mydata, 1, tmpfun) Assuming every row has only one non-NA entry. -- Don MacQueen Lawrence Livermore National Laboratory 7000 East Ave., L-627 Livermore, CA 94550 925-423-1062 On 11/21/16, 1:26 PM, "R-help on behalf of Olu Ola via R-help" <r-help-boun...@r-project.org on behalf of r-help@r-project.org> wrote: > Hello,I have the following data >| colA | colB | colC | colD | >| NA | pumpkin | NA | Pumpkin | >| Cassava | NA | NA | Cassava | >| yam | NA | NA | yam | >| NA | Cherry | NA | Cherry | >| NA | NA | Pepper | Pepper | >| NA | NA | Mango | Mango | >| maize | NA | NA | maize | > > >All I want to do is to combine the first three columns in order to obtain >the fourth column. >A way forward will be greatly appreciated. > > [[alternative HTML version deleted]] > >______________________________________________ >R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see >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. ______________________________________________ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see 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.
