bquote                 package: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.

See Also:

     'quote', 'substitute'

Examples:

     require(graphics)

     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)))

