How do I convert factors to numeric?
It may happen that when reading numeric data into R (usually, when reading in a file), they come in as factors. Iff
is such a factor object, you can use as.numeric(as.character(f))
to get the numbers back. More efficient, but harder to remember, is
as.numeric(levels(f))[as.integer(f)]In any case, do not call
as.numeric()
or their likes directly for the task at hand (as as.numeric()
or unclass()
give the internal codes).Однако, думаю, есть возможность обдурить пакет на стадии подгтоовки файла
для R учреждена отдельная кафедра
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