Hi! Would
df<- table2[grep("ID",table2[,1]), c(7,9,11,13,15)] do what you expect? Ivan Le 10/21/2010 15:42, amb1networks a écrit :
I'm new to R. I'm extracting important columns from single table using following code: File2<-"file.txt" table2<- read.delim(File2, skip=19, sep=";", header=F, na.strings=NA, fill=T) #extracting column 7 where rows match "ID" col1<- table2[grep("ID", table2[,1]),7] #similarly extracting column 9,11,13,15 col2<- table2[grep("ID", table2[,1]),9] col3<- table2[grep("ID", table2[,1]),11] col4<- table2[grep("ID", table2[,1]),13] col5<- table2[grep("ID", table2[,1]),15] there are also some other single columns I extracted from other file. Now I want to combine all these single columns into a single table with corresponding headers. Any hint on how that can be done? Thanks. i.e file3.txt col1 col2 col3 col4 col5 Regards, Anand Now how can I combine
-- Ivan CALANDRA PhD Student University of Hamburg Biozentrum Grindel und Zoologisches Museum Abt. Säugetiere Martin-Luther-King-Platz 3 D-20146 Hamburg, GERMANY +49(0)40 42838 6231 ivan.calan...@uni-hamburg.de ********** http://www.for771.uni-bonn.de http://webapp5.rrz.uni-hamburg.de/mammals/eng/mitarbeiter.php ______________________________________________ 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.