R Under development (unstable) (2025-04-25 r88178 ucrt) -- "Unsuffered Consequences"
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> library("mlogit")
Loading required package: dfidx

Attaching package: 'dfidx'

The following object is masked from 'package:stats':

    filter

> data("TravelMode", package = "AER")
> TravelMode$choice2 <- TravelMode$choice == "yes"
> TravelMode$incair <- with(TravelMode, income * (mode == "air"))
> tm_cl <- mlogit(choice2 ~ gcost + wait + incair, data = TravelMode, shape = "long", choice = "choice", alt.var = "mode", reflevel = "car")
> # Greene table 21.15 first column
> tm_hl <- mlogit(choice2 ~ gcost + wait + incair, data = TravelMode, shape = "long", choice = "choice", alt.var = "mode", reflevel = "car", heterosc = TRUE)
> # Greene table 21.15 second column
> tm_nl <- mlogit(choice2 ~ gcost + wait + incair, data = TravelMode, shape = "long", choice = "choice", alt.var = "mode", reflevel = "car", nests = list(fly = "air", ground = c("bus", "car", "train")), unscaled = TRUE)
> 
> ## tm_ml <- mlogit(choice2 ~ gcost + wait + incair, data = TravelMode,
> ## shape = "long", choice = "choice", alt.var = "mode", reflevel =
> ## "car", rpar = c(altair = "n", alttrain = "n", altbus = "n", gcost =
> ## "n", wait = "n", incair = "n"), R = 400)
> 
> 
> proc.time()
   user  system elapsed 
   1.93    0.48    2.43