Get a model for SIM calculation
Arguments
- model
A character string specifying the model name.
Value
A function representing the specified model.
Examples
get_models("gravity")
#> function (beta, d, m, n)
#> {
#> m * n * exp(-beta * d/1000)
#> }
#> <bytecode: 0x563bc0391d78>
#> <environment: 0x563bc03950b8>