[R-sig-dyn-mod] ode with variable parameters

Johannes Ranke johannes.ranke at jrwb.de
Thu Feb 9 12:17:34 CET 2017


Hi Thomas,

if you use method = "lsoda" (the default for ode.1D), if you pass "dllname" 
(pointing to a precompiled version of your model) you can specify "forcings".

See chapter 6 of the vignette "compiledCode" of the deSolve package.

Kind regards,

Johannes

Am Montag, 6. Februar 2017, 11:09:42 schrieb Thomas.Hoffmann at bafg.de:
> Dear all,
> 
> I would like to solve a simple diffusion-advection equation: dC/dt = v * C +
> gamma dC/dx
> 
> In which v and gamma changes through time. Basically I have a dataframe,
> which gives v and gamma at the time-steps that I use to solve the above
> equation with ode.1d.
> 
> How do I solve this problem dynamically with variable parameters.
> 
> 
> Thanks for your help
> Kind regards
> Thomas
> 
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