I would like to take this:
.img(plot(1:10), filename=a)
and produce
plot(1:10)
ie. whenever .img is used, I want to take the first argument and throw
away everything else.
(I am trying to produce a Sweave like environment in which I can apply
certain functions, but not have them displayed in
Assuming the desired output is a character string try:
f - function(x) deparse(substitute(x))
f(3+y)
[1] 3 + y
On 7/7/06, hadley wickham [EMAIL PROTECTED] wrote:
I would like to take this:
.img(plot(1:10), filename=a)
and produce
plot(1:10)
ie. whenever .img is used, I want to take
On 7/7/2006 8:08 AM, hadley wickham wrote:
I would like to take this:
.img(plot(1:10), filename=a)
and produce
plot(1:10)
ie. whenever .img is used, I want to take the first argument and throw
away everything else.
(I am trying to produce a Sweave like environment in which I can
I would like to take this:
.img(plot(1:10), filename=a)
and produce
plot(1:10)
Peter Dalgaard provided me with this:
f - function(e) {
if (!is.recursive(e)) e
else if (e[[1]] == quote(.img)) e[[2]]
else as.call(lapply(e, f))
}
f(quote({a-1;.img(abc,123)}))
{
a - 1
abc
}
which
On Fri, 7 Jul 2006, hadley wickham wrote:
I would like to take this:
.img(plot(1:10), filename=a)
I presume from your title that you want to take
foo - parse(text='.img(plot(1:10), filename=a)')
? That's an expression. In which case
foo[[1]][[2]]
plot(1:10)
(first expression which a
