| all.names {base} | R Documentation |
Find All Names in an Expression
Usage
all.names(expr, functions = T,
max.names = 200, unique = F)
all.vars(expr, functions = F,
max.names = 200, unique = T)
Arguments
expr |
an expression or call from which the names are to be extracted. |
functions |
a logical value indicating whether function names should be included in the result. |
max.names |
the maximum number of names to be returned. |
unique |
a logical value which indicates whether duplicate names should be removed from the value. |
Value
These functions return a character vector containing all the names which occur in an expression or call. These functions differ only in the default values for their arguments.
Examples
all.names(expression(sin(x+y)))
all.vars(expression(sin(x+y)))