[R] Substitute in function calling a function
felix at nfrac.org
Mon Oct 22 10:36:15 CEST 2007
I think the usual thing would be to pass substitute(x) or
deparse(substitute(x)) from the original function (fun2 in your
But if you really want to, you can do
fun <- function(x) eval.parent(call("substitute", substitute(x)))
On 10/22/07, Steve Powell <steve at promente.org> wrote:
> Dear list members,
> I am writing some functions to help with printing graphs.
> If I want to return the name of a variable within a function, for instance
> to print the label for a graph, I know that I can use substitute:
> fun=function(x) substitute(x) #plus of course some other processing
> fun(var) #prints "var" as required, not "x".
> But if I call this function in another function
> fun2=function(y) fun(y) #plus of course some other processing
> fun2(var) #prints "y" when what I wanted was "var"
> I have tried lots of tricks using eval and expression but can't seem to get
> it right. Any ideas?
> Thanks in advance
> Steve Powell
> proMENTE social research
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Felix Andrews / 安福立
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