Identifying non-zero initial conditions and setting those to zero.

[john-harrold]

I have a model where I have nonzero initial conditions for some of the states and I want to either remove the initial condition assignment or set them to zero programmatically. What is the best way to do this? I could loop through all the states in mod$props and just assign them to zero. But I figure there is probably a better way to do that.

[mattfidler]

The default assignment is zero. Why do you want to do this?

Ah. Nevermind. I see. I don't know an easy way to do this right now

[john-harrold]

I realize they are zero by default 😀. I'm doing some automation and I needed to do it as part of a workflow.

I am also workshopping my "Bill Denney edge case of the year" submission.

[john-harrold]

This works:

for(sname %in% object$props$output$state){
  cmd = paste0("object=object|> model({", sname, "(0)=0.0})")
 eval(parse(text=cmd))
}

But I'd rather do this with just the subset that have initial conditions defined in the model. Is there any place where that is stored?

[mattfidler]

This isn't stored anywhere, but rather translated to code. So... it is stored in the code only right now.