R Under development (unstable) (2023-08-05 r84874 ucrt) -- "Unsuffered Consequences"
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> library(efdm)
> # Test that prior is not dependent on the order of statespace
> statespace <- expand.grid(a=1:2, b=1:2, vol=1:15, age=1:35)
> statespace <- statespace[sample(nrow(statespace), nrow(statespace)),]
> 
> act <- define_activity("test", c("vol", "age"))
> act1 <- estimatetransprobs(c("vol", "age"), NULL, statespace, by=c("a", "b"), prior=prior_ff())
> A <- transprobs(act1)
> stopifnot(all(A$vol1==1 & A$age1 == 1))
> 
> act <- define_activity("test", c("vol", "age"))
> act1 <- estimatetransprobs(c("vol", "age"), NULL, statespace, factors=c("a", "b"), prior=prior_ff())
> A <- transprobs(act1)
> stopifnot(all(A$vol1==1 & A$age1 == 1))
> 
> act <- define_activity("test", c("vol", "age"))
> act1 <- estimatetransprobs(c("vol", "age"), NULL, statespace, factors=c("b"), by="a", prior=prior_ff())
> A <- transprobs(act1)
> stopifnot(all(A$vol1==1 & A$age1 == 1))
> 
> proc.time()
   user  system elapsed 
   0.37    0.06    0.43