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2009 Aug 21
2
Problem with passing a string to subset
Dear R-users,
The following question bothered me for the whole afternoon: how can one
pass a string as the conditioning argument to subset? I tried plain
mystr, eval(mystr), expression(mystr), etc... I don't to be able to find
the correct syntax
> foo <- data.frame(a=1:10,b=10:1,c=rep(1:2,5))
> mystr<-"c==1"
> subset(foo,c==1)
a b c
1 1 10 1
3 3 8 1
5 5 6