R: Partial substitution in expressions

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`	A language object.
`where`	An environment.

Value

A language object.

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)))