> Say I need to keep ID 1,2,4,5, 10 from the data frame dat. I can do:
> dat <- data.frame(ID = 1:10, var = 1:10)
> someID <- c(1,2,4,5,10)
> subset(dat, dat$ID %in% someID)
> Is there a quick way to do the opposite ...
>
Two operators spring to mind: ! and %nin
subset(dat, !(dat$ID %in% someID))
subset(dat, dat$ID %nin% someID)
--
Curt Seeliger, Data Ranger
Raytheon Information Services - Contractor to ORD
seeliger.c...@epa.gov
541/754-4638
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