yy<-poisson2[poisson2$Reboot.Id=="Reboot 2",poisson2$Task.Status=="F",,drop=FALSE]
doesn't work either? Any other ideas? On Mon, Aug 10, 2009 at 11:01 AM, mmv.listservs <mmv.listse...@gmail.com>wrote: > How do you access all the column attributes associated with a column reboot > instance? > > The variables > > poisson2 ~ a matrix with 10,000 rows and 8 column attributes. > > Things I tried: > > > This command only returns a vector for one of the column attributes > x1_prob <- poisson2$Probability[poisson2$Reboot.Id=="Reboot 1"] > > The command below gave an error: > all_column_attributes_for_reboot_1 <- poisson2[poisson2$Reboot.Id=="Reboot > 1"] > > 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.