generate_random_migration: Generate a migration structure with a random structure.
In FlywayNet: Estimate Migration Birds Flyways Network with HSMM

View source: R/generate_random_migration.R

generate_random_migration

R Documentation

Generate a migration structure with a random structure.

Description

Generate a migration structure with a random structure.

Usage

generate_random_migration(
  nb_sites = 4,
  type_structure = "forward",
  nb_max_neigh = 2,
  nb_birds = 100,
  death_probability_mode = "mean",
  death_probability_domain = c(0.01, 0.05),
  sojourn_mode = "mean",
  sojourn_domain = c(1, 10),
  flight_duration_mode = "mean",
  flight_duration_domain = c(1, 5),
  transition_mode = "equi",
  last_site_as_sink = TRUE,
  observation_hide = 0
)

Arguments

`nb_sites,`	required number of site. Default is 4.
`type_structure,`	Either "forward" or "two-directions". If "forward" the transitions go forward only. If "two-directions", forward and backwards transitions are possible. Default is "forward".
`nb_max_neigh,`	the number of destinations of any site, unless structural constraints prevent it. Default is 2.
`nb_birds,`	the number of birds on the initial sites. Birds are distributed over all sources sites. Default is 100.
`death_probability_mode`	Either "mean" or "unif" (or a vector of such values of length the number of sites). If "mean" death probability are set to the mean value of the death_probability_domain. If "unif", the death probabilities are drawn uniformly into the range of the death_probability_domain. Default is "mean".
`death_probability_domain`	Min and max of death probabilities. Default is c(0.01,0.05)
`sojourn_mode`	Either "mean" or "unif" (or a vector of such values of length the number of sites). If "mean" sojourns mean time is set to the mean value of the sojourn_domain. If "unif", the sojourn mean time is drawn uniformly into the range of the sojourn_domain. Default is "mean".
`sojourn_domain`	Min and max of sojourn mean time. Default is c(1,10)
`flight_duration_mode,`	Either "mean" or "unif". If "mean" flight durations are set to the closest integer of the mean value of the flight_duration_domain. If "unif", the flight durations are drawn uniformly into the range of the flight_duration_domain. Default is "mean".
`flight_duration_domain,`	Min and max integers of flight durations. Default is c(1,5)
`transition_mode`	Either "equi" or "unif". If "equi" transition are equiprobable taking into account the link_knowledge. If "unif" transitions are drawn uniformly. Default is "equi".
`last_site_as_sink`	Boolean. If type_structure is set to "forward", last site is the only sink of the network. If TRUE, the last site is considered as a specific sink where death probability is set to 1 and the sojourn mean time is set to the sum of sojourn mean time of other sites. Default is TRUE.
`observation_hide`	probability of hidding a single observation. Default is 0.