search for: transformaton

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2005 Oct 06
2
factor : how does it work ?
...e (with the as.data.frame() or the data.frame() commands) from vectors, it seems that some "columns" of the dataframe (which where vectors) are factors and some not, but I didn't find an explanation for which become factor and which don't. (I know I can use I() to avoid the factor transformaton but I think it is not an optimal solution to avoid the factor type just because I don't kno how to deal with) 2d I can't manage to deal with factors, so when I have some, I transform them in vectors (with levels()), but I think I miss the power and utility of the factor type ? Any help GR...