bquote {base}R Documentation

Partial substitution in expressions

Description

An analogue of the LISP backquote macro. bquote quotes its argument except that terms wrapped in .() are evaluated in the specified where environment.

Usage

bquote(expr, where = parent.frame())

Arguments

expr An expression
where An environment

Value

An expression

See Also

quote, substitute

Examples

a <- 2

bquote(a==a)
quote(a==a)

bquote(a==.(a))
substitute(a==A, list(A=a))

plot(1:10, a*(1:10), main = bquote(a==.(a)))
[Package base version 2.2.0 Index]