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2008 Feb 08
4
Subsetting a data.frame degenerates at one column?
...of some use to people other than me. One obstacle I encounter is that, when I select one column out of a data.frame, the result is no longer a data.frame. So, say I've got, in data frame 'input' disk1 disk2 disk3 disk4 T0000 0 1 0 4 T0001 0 1 0 5 T0002 0 1 0 5 T0003 0 2 0 4 T0004 0 2 0 3 T0005 0 1 0 3 T0006 0 0 0 3 and somewhere I've noted a list targets <- c('disk2','disk3') I can say input[,targets] disk2 disk3 T0000 1 0 T00...