this is great, thanks! one problem I noticed though is that it fills all NA values in every column, is it possible to specify only one column, e.g. only ID (I have NA values in another column I want to keep)
Kind regards, Florian Am 04.08.2014 um 11:31 schrieb Gerrit Eichner <gerrit.eich...@math.uni-giessen.de>: > Hello, Florian, > > function na.locf() from package zoo mightdo what you want. > > Hth -- Gerrit > > --------------------------------------------------------------------- > Dr. Gerrit Eichner Mathematical Institute, Room 212 > gerrit.eich...@math.uni-giessen.de Justus-Liebig-University Giessen > Tel: +49-(0)641-99-32104 Arndtstr. 2, 35392 Giessen, Germany > Fax: +49-(0)641-99-32109 http://www.uni-giessen.de/cms/eichner > --------------------------------------------------------------------- > > On Mon, 4 Aug 2014, fd wrote: > >> I have the following .csv file containing about 40000 values (here only an >> extract and simplified version): >> >> NAME ; YEAR; ID; VALUE; CUMMB >> Sample1; 1998; 354; 45; 45 >> Sample1; 1999; 354; 23; 68 >> Sample1; 2000; NA; 66; 134 >> Sample1; 2001; NA; 98; 232 >> Sample1; 2002; NA; 36; 268 >> Sample1; 2003; NA; 59; 327 >> Sample1; 2004; NA; 64; 391 >> Sample1; 2005; 354; 23; 414 >> Sample1; 2006; 354; 69; 483 >> Sample1; 2007; 354; 94; 577 >> Sample1; 2008; 354; 24; 601 >> Sample2; 1964; 1342; 7; 7 >> Sample2; 1965; 1342; 24; 31 >> Sample3; 2002; 859; 90; 90 >> Sample3; 2003; NA; 93; 183 >> Sample3; 2004; NA; 53; 236 >> Sample3; 2005; 859; 98; 334 >> >> What I would like to do is to replace the NA values in ID with the values >> from the ID. E.g. all values in ID from Sample 1 should have the value 354; >> all values in ID from Sample 3 should have the value 859 etc. >> >> Is there a simple way to do this? >> >> Thanks for your help. >> >> >> >> -- >> View this message in context: >> http://r.789695.n4.nabble.com/Filling-in-missing-values-in-a-column-based-on-previous-and-following-values-tp4694993.html >> Sent from the R help mailing list archive at Nabble.com. >> >> ______________________________________________ >> 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. ______________________________________________ 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.
