[R] choicemodelr is misbehaving under R3.0

John Kane jrkrideau at inbox.com
Fri Jun 28 15:22:53 CEST 2013

I have encountered what looks to be a problem with ggpairs in ggally. No idea it is from 3.0 as I had never used ggpairs before update to 3.0 but it sounds a bit similar

John Kane
Kingston ON Canada

> -----Original Message-----
> From: dimitri.liakhovitski at gmail.com
> Sent: Fri, 28 Jun 2013 09:11:40 -0400
> To: r-help at r-project.org, jcolias at decisionanalyst.com, info at rstudio.com
> Subject: Re: [R] choicemodelr is misbehaving under R3.0
> Dear R-studio and R colleagues,
> I've interacted with the authors of the package "ChoiceModelR" and it
> looks
> like there is a problem in the way RStudio interacts with R3.0.
> At least the package ChoiceModelR works just fine under both R gui and
> Rstudio when R version is < 3.0
> When R3.0 is tested - and only R gui is used, the package works just
> fine.
> However, when RStudio is used with R3.0 then the computations by
> ChoiceModelR take hours instead of minutes. The problem has been
> replicated
> with different Windows 7 PCs (32 and 64 bits) and even with a Linux
> computer.
> We are not sure if the same kind of problem exists for other R packages -
> when one uses RStudio in combination with R3.0.
> Could you please look into it? Thank you very much!
> Dimitri
> On Thu, Jun 27, 2013 at 10:37 AM, Dimitri Liakhovitski <
> dimitri.liakhovitski at gmail.com> wrote:
>> Hi John (and other authors of ChoiceModelR package),
>> I am experiencing a weird thing when using the function choicemodelr
>> under
>> R3.0.1.
>> Before I updated to R3.0, I had used choicemodelr unde R2.15. It was
>> always as fast or faster than exactly the same task in Sawtooth
>> software.
>> Now, I've tried to run it under R3.0.1. It seems to be doing the job.
>> But
>> something is slowing it down dramatically. In the beginning, it showed
>> time
>> left for estimation as 14 min. But then time passed and the time left
>> increased(!) instead of decreasing. My whole run took 1.8 hours. I've
>> run
>> the same thing in Sawtooth - it took 13 min.
>> I replicated the same result under different conditions (restarted my
>> PC,
>> had no other stuff running).
>> My PC is a 64-bit PC (Windows).
>> Then I asked a colleague who also has R3.0 on his PC to run my code. His
>> PC is a 32-bit one (Windows). Same thing happened to him. It showed time
>> left as 14 min in the beginning and then the time left started growing.
>> Then, I asked a colleague who has R2.15 (on a 32-bit Windows machine) to
>> run my code. It took him 12 minutes!
>> So, something is going on with ChoiceModelR unde R3.0
>> Thanks for looking into it.
>> --
>> Dimitri Liakhovitski
> --
> Dimitri Liakhovitski
> 	[[alternative HTML version deleted]]
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