Hi,
Is there any way, from R code, to perform introspection as to where
certain names acquired their values? The specific functionality I'm
looking for in this case is to be able to request my editor to view the
definition corresponding to a name in its original source location
(presuming for the
I'd very much appreciate guidance on this. A user reported that the
as.double() coercion used inside the .C() call for a function in my
package (specifically, randomForest:::predict.randomForest()) is
taking up significant amount of time when called repeatedly, and
Removing some of these reduce
On Aug 27, 2010, at 2:44 PM, Liaw, Andy wrote:
> I'd very much appreciate guidance on this. A user reported that the
> as.double() coercion used inside the .C() call for a function in my
> package (specifically, randomForest:::predict.randomForest()) is
> taking up significant amount of time w
readNEWS() states:
Read R's ‘NEWS’ file or a similarly formatted one. This is an
experimental feature, new in R 2.4.0 and may change in several
ways
and news() also indicates that this tool is supposed to work with
non-R news files. However, I've not been able to get readNEWS to
On Fri, 27 Aug 2010, peter dalgaard wrote:
On Aug 27, 2010, at 2:44 PM, Liaw, Andy wrote:
I'd very much appreciate guidance on this. A user reported that the
as.double() coercion used inside the .C() call for a function in my
package (specifically, randomForest:::predict.randomForest()) is
t
From: Prof Brian Ripley
>
> On Fri, 27 Aug 2010, peter dalgaard wrote:
>
> >
> > On Aug 27, 2010, at 2:44 PM, Liaw, Andy wrote:
> >
> >> I'd very much appreciate guidance on this. A user
> reported that the
> >> as.double() coercion used inside the .C() call for a function in my
> >> package (s
> Hadley Wickham writes:
> readNEWS() states:
> Read R's ‘NEWS’ file or a similarly formatted one. This is an
> experimental feature, new in R 2.4.0 and may change in several
> ways
> and news() also indicates that this tool is supposed to work with
> non-R news files. Howeve
I just tried out the effects of using R's NA value¹ with C arithmetic
on an amd64 linux box.
I always got a NAN result for which R's R_IsNA() would return true.
At least on this platform, NAN's propagate w/o a change in their
lower 32 bits.
If NA is supposed to propagate the way NaN is spec'ed t
Hi Radford,
On 08/25/2010 07:50 PM, Radford Neal wrote:
I've looked at how to speed up the transpose function in R
(ie, t(X)).
The existing code does the work with loops like the following:
for (i = 0; i< len; i++)
REAL(r)[i] = REAL(a)[(i / ncol) + (i % ncol) * nrow];
It
