search for: keviin

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2008 Aug 02
2
Basic factor question.
...; <NA> [16] <NA> <NA> <NA> <NA> <NA> Levels: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 So why all of the NA? What happend to 'a'. 'b', etc.? I was expecting a=1, b=2, c=3 etc. I am missing something. Please help with my understanding. Keviin