Since you only provide pseudo-code I will give a guess as to the source of
the problem.
It is easy to get "burned" by use of the ifelse statement. Its results have
the same "shape" as the first argument.
My suggestion is to try replacing ifelse by a standard
if ( ) {
} else {
}
HTH,
Eric
Dear all,
I am using the DeSolve Package to simulate a system dynamics model. At the
problematic point in the model, I basically want to decide how many products
shall be produced to be sold. In order to determine the amount a basic
forecasting model of using the average of the last 12 time pe
Dear Andre,
some people would be happy to assist you, but your code fragment is
incomplete, so diagnosing your problem was impossible. Please read the
posting guide and provide a minimum reproducible example.
Furthermore I wonder why you use dede and not ode, and why sum() with
empty parenth
It is likely the "p" variable is not defined in your R environment.
Inside your function model.LIDR, the variable "p" is used before being
initialized
in any of the environments reachable by the search path, included the model.LIDR
function environment.
The remedy is to define and initiali
I have the following differential equations and return list:
dCgd.dt = -kad*y[1]-kgd*y[1] # PK model equation gut d
dCld.dt= kad*y[1]-rhyd-rmetd #pk model equation liver d
dCgl.dt = -kal*y2[1]-kgl*y2[1] # PK model equation gut l
dCll.dt= kal*y2[1]-rhyl-rmetl #pk model
On 6/8/2010 2:03 PM, Ben Bolker wrote:
yahoo.com> writes:
Hi,
I have used DeSolve package for my ODE problem regarding
infectious disease transmission and currently am
trying to pass lots (roughly a thousand) of model parameters
to the C compiled model (I have to use C
compiled code inst
yahoo.com> writes:
>
> Hi,
>
> I have used DeSolve package for my ODE problem regarding
> infectious disease transmission and currently am
> trying to pass lots (roughly a thousand) of model parameters
> to the C compiled model (I have to use C
> compiled code instead of R code purely because
Hi,
I have used DeSolve package for my ODE problem regarding infectious disease
transmission and currently am trying to pass lots (roughly a thousand) of model
parameters to the C compiled model (I have to use C compiled code instead of R
code purely because of the speed).
I can't go define it
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