Displaying 3 results from an estimated 3 matches for "wheref".
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2007 Dec 06
1
trace() problems (PR#10498)
trace() seems to be broken in 2.6.1 and R-devel:
Try the example from the ?debug man page:
> library(methods)
> trace("plot", browser, exit=browser, signature = c("track",
+ "missing"))
Error in getFunction(what, where = whereF) : no function "plot" found
Okay, it's just an example that doesn't work. Let's try a simpler one,
the first example from the ?trace man page:
> trace(sum)
> hist(stats::rnorm(100)) # shows about 3-4 calls to sum()
> untrace(sum)
No trace! In a clean session...
2004 Jul 14
2
tracing something in a namespace (PR#7091)
...t; x <- rnorm(10)
> y <- 1:10
> xyplot(y ~ x)
> trace(lattice:::print.trellis, exit=recover)
[1] "print.trellis"
Warning message:
Assigning over the binding of symbol "print.trellis" in environment/package "lattice"
in: .assignOverBinding(what, newFun, whereF)
> xyplot(y ~ x)
> untrace(lattice:::print.trellis)
Error in untrace(lattice:::print.trellis) :
Argument what should be the name of a function
>
Something isn't right. I see three possibilities.
a. tracing something in a namespace is prohibited and I didn't get an error,
in...
2011 Apr 07
2
How to debug reference classes?
How do you debug methods of a reference class? I've been using mtrace, which
is excellent, but i cannot figure out how to mtrace a reference class
method. Maybe there is some other way to debug these, for example with
ordinary trace? for now i am only able to use options(error=recover), which
is not giving me idea where exactly in the code i am once i am stopped on an
error.
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