row.names attribute of a data frame.
row.names(x) row.names(x) <- value
x.
This is coerced to a vector of character strings if it was not one already.
x
are changed to
value.
The object
x is also coerced to be a data frame
if it is not one already.
The
value may be a character vector, or anything that
can be coerced to a character vector. However, it should not
be a
bdCharacter or other
bdVector;
you can convert these to an ordinary vector using
bd.coerce
Instead of using
names to replace row names from a matrix,
use
rowIds or
dimnames.
When creating a data frame using
data.frame,
it is possible to supply
row.names
which are not character, and are not coerced to character.
ff <- fuel.frame row.names(fuel.frame) row.names(ff) <- 1:60 # row names are now numbers, not car names