f_rhs {lazyeval} | R Documentation |
f_rhs
extracts the righthand side, f_lhs
extracts the
lefthand side, and f_env
extracts the environment. All functions
throw an error if f
is not a formula.
f_rhs(f) f_rhs(x) <- value f_lhs(f) f_lhs(x) <- value f_env(f) f_env(x) <- value
f, x |
A formula |
value |
The value to replace with. |
f_rhs
and f_lhs
return language objects (i.e.
atomic vectors of length 1, a name, or a call). f_env
returns an environment.
f_rhs(~ 1 + 2 + 3) f_rhs(~ x) f_rhs(~ "A") f_rhs(1 ~ 2) f_lhs(~ y) f_lhs(x ~ y) f_env(~ x)