Dear Peter,Thanks for the answer, it's working very well. And again sorry, about asking as a banal question, but I really didn't have who to ask to help me. Uwe: I don't have a teacher, I never learned R before. I'm just trying to learn self-educating, because it's very helpful in data manipulation.... Answering my question would not take more time, than this sour answer...
All the best! Orsolya 2009/2/16 Peter Dalgaard <p.dalga...@biostat.ku.dk> > Uwe Ligges wrote: > > > > > > Vincze Orsolya wrote: > >> There are three columns, I was just careless. > >> I succeed to merge the two tables. But: > >> 1) in the first table there were rows, which were not present in the > >> second > >> table, these rows were deleted from the merged table too, but I need > >> them. > >> 2) If i want to import from the second table just a certain column, > >> not all > >> that is missing from the first, how can i do that? > >> 3) How can I save the generated table? > >> > >> Sorry about the banal questions.... I'm beginner. > >> And thanks for the help... > >> Have a nice day > > > > > > Homework? Then please ask you course material or teacher. > > What makes you think that, Uwe? I don't see a teacher asking merge() > questions to a rank beginner (I wouldn't). > > 1) look at the documentation: all.x=TRUE > 2) use the usual subsetting mechanisms to work with only the relevant > set of columns, e.g. merge(x, y[,c(1,2,6)], ....) > 3) assign using z <- merge(x,y,....), then save() (or maybe write.table()) > > -pd > > > > >> > >> 2009/2/15 Peter Dalgaard <p.dalga...@biostat.ku.dk> > >> > >>> Vincze Orsolya wrote: > >>> > >>>> Dear all,I had just started to learn R. So my question may sound a bit > >>>> stupid for you. > >>>> Is that possible to match and merge two tables in R? I mean I have two > >>>> tables, in the first I have two columns: RING NUMBER, WEIGHT and > >>>> CAPTURE > >>>> > >>> Err, ... for large values of "two"? Or is one of the three a rowname? > >>> > >>> DATE, in the second RING NUMBER, SEX and CAPTURE DATE. > >>>> 1) First I want to see, if to the ring numbers are the same, the > >>>> capture > >>>> dates are too? > >>>> 2) And second if ring numbers are the same, to import the sex from the > >>>> second table in the first. > >>>> > >>>> Is that possible? > >>>> > >>> Yes. It's a job for merge() > >>> > >>> -- > >>> O__ ---- Peter Dalgaard Øster Farimagsgade 5, Entr.B > >>> c/ /'_ --- Dept. of Biostatistics PO Box 2099, 1014 Cph. K > >>> (*) \(*) -- University of Copenhagen Denmark Ph: (+45) > 35327918 > >>> ~~~~~~~~~~ - (p.dalga...@biostat.ku.dk) FAX: (+45) > 35327907 > >>> > >> > >> [[alternative HTML version deleted]] > >> > >> > >> > >> ------------------------------------------------------------------------ > >> > >> ______________________________________________ > >> 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. > > > -- > O__ ---- Peter Dalgaard Øster Farimagsgade 5, Entr.B > c/ /'_ --- Dept. of Biostatistics PO Box 2099, 1014 Cph. K > (*) \(*) -- University of Copenhagen Denmark Ph: (+45) 35327918 > ~~~~~~~~~~ - (p.dalga...@biostat.ku.dk) FAX: (+45) 35327907 > > [[alternative HTML version deleted]]
______________________________________________ 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.
