R Under development (unstable) (2023-08-05 r84874 ucrt) -- "Unsuffered Consequences"
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> library(efdm)
> 
> statespace <- expand.grid(ds=c("sp", "pi"), region=c("n", "s"), vol=1:3, stringsAsFactors=FALSE)
> statespace$split <- statespace$ds == "sp" & statespace$region == "n"
> pairdata <- data.frame(ds=c("sp", "pi"), vol0=c(1,1), vol1=c(2,3), region=c("n", "s"))
> pairdata$split <- pairdata$ds == "sp" & pairdata$region == "n"
> actprob <- state0 <- statespace
> actprob$test <- 1
> state0$area <- c(1,1,1,1, 0,0,0,0, 0,0,0,0)
> 
> act1 <- define_activity("test", c("vol"))
> transprobs(act1) <- estimatetransprobs("vol", pairdata, statespace, factors=c("region"), by=c("split", "ds"), prior="nochange")
> r1 <- runEFDM(state0, actprob, list(act1), 10)
> 
> statespace <- expand.grid(ds=c("sp", "pi"), region=c("n", "s"), vol=1:3)
> statespace$split <- statespace$ds == "sp" & statespace$region == "n"
> pairdata <- data.frame(ds=c("sp", "pi"), vol0=c(1,1), vol1=c(2,3), region=c("n", "s"))
> pairdata$split <- pairdata$ds == "sp" & pairdata$region == "n"
> actprob <- state0 <- statespace
> actprob$test <- 1
> state0$area <- c(1,1,1,1, 0,0,0,0, 0,0,0,0)
> 
> act1 <- define_activity("test", c("vol"))
> transprobs(act1) <- estimatetransprobs("vol", pairdata, statespace, factors=c("region"), by=c("split", "ds"), prior="nochange")
> r2 <- runEFDM(state0, actprob, list(act1), 10)
> r1$ds <- factor(r1$ds, levels=c("sp", "pi"))
> r1$region <- factor(r1$region, levels=c("n", "s"))
> sortdf <- function(x) x[do.call(order, x),]
> stopifnot(all(sortdf(r1)==sortdf(r2)))
> 
> 
> proc.time()
   user  system elapsed 
   0.51    0.04    0.54