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Actual Arguments
Syntax
substitute(arg, env=NULL)
Description
substitute returns the expression which was typed
as the value of a formal argument.
The typical use of this is to create informative
labels for data sets and plots.
The following example shows a simple use of this facility.
It uses the functions deparse and substitute
to create labels for a plot which are character string versions
of the actual arguments to the function myplot.
Examples
<![CDATA[myplot <- function(x, y)
plot(x, y, xlab=deparse(substitute(x)),
ylab=deparse(substitute(y)))
]]>