Not to worry, I just worked it out (seems obvious now, apologies).
#Function for generating parameters
genparms<-function() {
list(
x = c(runif(1,2,3),runif(1,2,3))
,y = runif(1,2,3)
)
}
#Create N parameter sets
N<- 10
set<-rep(list("NA"),N)
for (i in 1:N) {
set[[i]]<-genparms()
}
> From: james_...@hotmail.com
> To: r-help@r-project.org
> Date: Wed, 28 Nov 2012 06:28:03 +0000
> Subject: [R] generating sets of parameters when some parameters are vectors
>
>
>
> I'm trying to generate N lists of randomly selected parameter values. Some of
> the parameters are vectors while other are single values. I've tried to use
> the approach below but it doesn't work for parameter x, which should be a
> vector. Thanks in advance!
> James
>
>
> #Define names of parameters in the list,
> parms<- list(
> x=c(0,0),
> y=0)
>
> #Create N sets of randomly selected parameter values
> N<- 10
> set<-rep(list(parms),N)
> for (i in 1:N) {
> set[[i]]["x"]=c(runif(1,1,2), runif(1,2,3)) ###Problem here
> set[[i]]["y"]=runif(1,5,10)
> }
>
>
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>
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