R-help,
I have a data frame wich I subset like :
a <- subset(df,df$"column2" %in% c("factor1","factor2") & df$"column2"==1)
But when I type levels(a$"column2") I still get the same levels as in df (my original
data frame)
Why is that?
Is it right?
Luis
Luis Ridao Cruz
Fiskiranns�knarstovan
N�at�n 1
P.O. Box 3051
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