Quoting directly from the help page for factor
:
To transform a factor f to its original numeric values, as.numeric(levels(f))[f]
is recommended and slightly more efficient than as.numeric(as.character(f))
.
Quoting directly from the help page for factor
:
To transform a factor f to its original numeric values, as.numeric(levels(f))[f]
is recommended and slightly more efficient than as.numeric(as.character(f))
.