[R-sig-dyn-mod] Repost: using delay ODEs in compiled model of deSolve

[Li, Zhihua *]

I'd love to! But I failed to check out the latest code at R-forge by doing:

svn checkout svn://svn.r-forge.r-project.org/svnroot/desolve/

Always got error
svn: E730060: Unable to connect to host 'svn.r-forge.r-project.org'.


It could be that our IT department blocked some outside connection. I also tried the Download links at http://r-forge.r-project.org/R/?group_id=167 but they didn't work (except for the stable release).
I was wondering if there are other ways to get the latest code/package.....


Thanks a lot!

Zhihua Li



-----Original Message-----
From: Thomas Petzoldt [mailto:Thomas.Petzoldt at TU-Dresden.de] 
Sent: Thursday, March 21, 2013 9:12 AM
To: Special Interest Group for Dynamic Simulation Models in R
Cc: Tomas Radivoyevitch; Li, Zhihua *
Subject: Re: [R-sig-dyn-mod] Repost: using delay ODEs in compiled model of deSolve

On 3/19/2013 3:43 PM, Tomas Radivoyevitch wrote:
> I had the same question about 6 months ago, and about 2 years ago 
> before that, and am in essentially the same boat.  My feeling is that 
> if it was easy, there would have been an example of doing it somewhere 
> in the documentation. I'm waiting for one of the package maintainers 
> to make such an example. In the mean time, I'm ditching delay 
> equations and going with higher order ODEs instead.

Using additional states or higher order equations sounds quite natural to me... but in order to get rid of such questions, I digged into the code ;-)

Now, the development version of deSolve (on R-Forge) seems to be able to run compiled DDEs. Who is interested to test it?

Have fun!

Thomas P.



--
Dr. Thomas Petzoldt
Technische Universitaet Dresden
Faculty of Environmental Sciences
Institute of Hydrobiology
01062 Dresden, Germany

E-Mail: thomas.petzoldt at tu-dresden.de
http://tu-dresden.de/Members/thomas.petzoldt