Hi Gabor,
Look, I agree with you about S3 and have at times wished I had chosen that path
rather than S4. It seems to do the things I struggle to find answers for with
S4. But..., knowing little about R before engaging with this project, I
decided to go with the latest OO framework, S4. I do
In terms of performance if you want the fastest
performance in R go with S3 and if you want
even faster performance rewrite your inner loops
in C. All the other approaches will usually be slower.
Also S3 is simple, elegant and will result in less code
and take you much less time to design, program
On Mon, Jun 29, 2009 at 9:05 AM, hadley wickham wrote:
> In that case, try:
>
> qplot(reorder(factor(model),delta),delta,data=growthm.bic)
>
> Deepayan: do you think there should also be a numeric method for reorder?
r-devel now has a reorder.default (replacing reorder.factor and
reorder.character
Hi Thomas,
It is a population-based model, but I didn't develop the work. I am just the
programmer who has been given the job of coding it. The goal is to allow for a
plug and play type approach by users to construction of the model (of both
elements and functionality). Hence my focus on OO.
> -Original Message-
> From: Martin Morgan [mailto:mtmor...@fhcrc.org]
> Sent: Thursday, 2 July 2009 10:58 PM
> To: Troy Robertson
> Cc: 'r-devel@R-project.org'
> Subject: Re: [Rd] V2.9.0 changes [Sec=Unclassified]
>
> Troy Robertson wrote:
> > Well...
> >
> > My performance problems were
if ("pkg1" %in% rownames(utils:::installed.packages()) ) {
library(pkg1)
...
}
can be replaced by:
if (require("pkg1")) {
...
}
/Henrik
On Thu, Jul 2, 2009 at 5:29 AM, Jon Olav Skoien wrote:
> Hi Seth,
>
> And thanks for your suggestion! I was not able to do exactly what you
> described (
Hi Troy,
first of all a question, what kind of ecosystem models are you
developing in R? Differential equations or individual-based?
Your write that you are a frustrated Java developer in R. I have a
similar experience, however I still like JAVA, and I'm now more happy
with R as it is much more
On Thu, Jul 2, 2009 at 1:37 AM, Troy Robertson wrote:
> Well...
>
> My performance problems were in the pass-by-value semantics of R.
>
> I have just changed my classes to inherit from .environment and then moved
> data members from S4 slots to the .xData objects as Martin suggested.
>
Note that
Troy Robertson wrote:
> Well...
>
> My performance problems were in the pass-by-value semantics of R.
>
> I have just changed my classes to inherit from .environment and then moved
> data members from S4 slots to the .xData objects as Martin suggested.
Actually, I had hoped the take-home messag
Hi Seth,
And thanks for your suggestion! I was not able to do exactly what you
described (I have no earlier experience with using environments), but
you mentioning .onLoad was a good starting point. I have now removed all
references to pkg1 from the NAMESPACE, and wrote the following .onLoad
Hello,
I've looked in tools:::.install_packages for some sort of hook that
would let packages developers point to further instructions after a
package is installed. For example, some packages need to setup
environment variables, ...
Is there something I have missed ?
Romain
--
Romain Franc
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