with(data, expr, ...)
data argument.
with() may use them.
data
object, then in frames 1 and 0, and finally in the attached
Splus databases.
The
with function has the following methods:
default,
pframe.
This is basically a wrapper for the
eval function
where
data is used as the
local= argument
to
eval. If
data is a
data.frame
then its column names may be used in the expression.
If
data is a
pframe
object, then
parameters(data) may be used in addition
to the column names.
with(fuel.frame, symbols(x=Weight, y=Mileage, circles=Disp., inches=.25))