ggplot2
style and stand-alone aesthetic arguments (i.e.
y
, x:z
, etc).mpg
) or dplyr-like variable calls (i.e.
mpg:hp
).
rm.gg2(expr)
substitute()
. If the tree is not
wrapped by c()
then it is advised to wrap x
with
list()
.x
in a list
is due to the way
x
will be indexed/subsetted. The c
function wrapping is
assumed, so therefore the list
wrapping is needed.