Displaying 6 results from an estimated 6 matches for "fooobject".
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2010 Jun 09
0
Argument mismatches in S3 generic and method
...gument than
the generic depends on whether there is a ... in the
argument list. If there is is no ellipsis then
the call cannot tag the argument with either name
but an untagged first argument works:
> zNoDots <- function(x) UseMethod("zNoDots")
> zNoDots.foo <- function(fooObject) { cat("zNoDots.foo: fooObject=")
; dput(fooObject) }
> foo <- structure(1:4, class="foo")
> x <- "x in .GlobalEnv"
> zNoDots(foo)
zNoDots.foo: fooObject=structure(1:4, class = "foo")
> zNoDots(x=foo)
zNoDots.foo: fooObject=Error...
2013 Jan 28
1
parse/eval and character encoded expressions: How to deal with non-encoding strings?
Hi,
I am intending to save a path-describing character object in a slot of a
class I'm working on. In order to have the option to use "system.file" etc
in such string-saved path definitions, I wrote this
ExpressionEvaluator <- function(x){
x <- tryCatch(
expr=base::parse(text=x),
error = function(e){return(as.expression(x))},
finally=TRUE)
return(x)
}
This
2010 May 14
2
Subscripting a matrix-like object
I have an S3 class called "tis" (Time Indexed Series) which may or may
not have multiple columns. I have a function "[<-.tis" that I've
reproduced below.
My question is this: inside of "[<-.tis", how can I distinguish between
calls of the form
x[i] <- someValue
and
x[i,] <- someValue ?
In either case, nargs() is 3, and looking at the values
2010 May 14
2
Subscripting a matrix-like object
I have an S3 class called "tis" (Time Indexed Series) which may or may
not have multiple columns. I have a function "[<-.tis" that I've
reproduced below.
My question is this: inside of "[<-.tis", how can I distinguish between
calls of the form
x[i] <- someValue
and
x[i,] <- someValue ?
In either case, nargs() is 3, and looking at the values
2007 Mar 15
4
R 2.5.0 devel try issue in conjuntion with S4 method dispatch
...representation("fooBase"),
validity = NULL,
where = .GlobalEnv,
sealed = TRUE)
plotObject.foo <- function(x, y) {
plot(x,y)
}
setMethod("plotObject", signature=c("foo", "numeric"), plotObject.foo,
where=.GlobalEnv)
fooObject <- new("foo")
## should fail and return object with attribute 'try-error' set
ret <- try(plotObject(fooObject, character(1)))
Error in as.list(call)[[1]] == "doTryCatch" :
comparison (1) is possible only for atomic and list types
>is(ret)
Error in .cl...
2005 May 10
1
Fwd: Re: Implementation of the names attribute of attribute lists
Hi Martin,
Thanks for your reply. I am responding on r-devel to
provide some examples of outputs of the function that
I had list in the post-scriptum of my previous
email (BTW, did my post went through the list? I
subscribed only after mailing it).
You wrote:
>Just to ask the obvious:
>
> Why is using str() not sufficient for you and instead,
> you use 'print.object'