x=c("blah","blub","bleep","foo")
y=rnorm(4)yourdata=data.frame(x,y) yourdata newdata=yourdata[order(y),] newdata thisiswhatyouwant=newdata[1:2,] thisiswhatyouwant hth, daniel ------------------------- cuncta stricte discussurus ------------------------- -----Ursprüngliche Nachricht----- Von: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org] Im Auftrag von Inchallah Yarab Gesendet: Wednesday, August 12, 2009 11:53 AM An: r-help@r-project.org Betreff: [R] to extract a section of the matrix HI, i have this matrix and i want to extract a section of the matrix which present the first and second value of optim position: OptimYear LRPhase PriorLRPosition OptimPosition LRPosition 5 2009 1 1.15641679414676 0.33037984561357 1 6 2009 1 1.05365365779321 0.282266634171568 1 7 2009 1 0.959670688361124 0.199612536004054 1 8 2009 1 0.87403582415134 0.103774779139200 1 i wante this like result: OptimYear LRPhase PriorLRPosition OptimPosition LRPosition 7 2009 1 0.959670688361124 0.199612536004054 1 8 2009 1 0.87403582415134 0.103774779139200 1 any ideas, thank you!! [[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.
