Simulate a simple data set — sim.momo • momo

sim.momo allows to quickly simulate all data sets and components required to fit the movement model, fit.momo.

Usage

sim.momo(
  fit = NULL,
  xrange = c(0, 1),
  yrange = c(0, 1),
  dxdy = c(0.1, 0.1),
  select = FALSE,
  plot.land = FALSE,
  keep.gpar = FALSE,
  trange = c(0, 1),
  dt = 0.1,
  nt = 1,
  rho_t = 0.85,
  sd = 2,
  h = 0.2,
  nu = 2,
  rho_s = 0.8,
  delta = 0.1,
  zrange = c(20, 28),
  matern = TRUE,
  diagonal = FALSE,
  par = NULL,
  n.alpha = 3,
  const.dif = TRUE,
  knots.tax = NULL,
  knots.dif = NULL,
  correct.peclet = FALSE,
  use.ctags = TRUE,
  n.ctags = 500,
  use.atags = TRUE,
  n.atags = 50,
  trange.rel = NULL,
  xrange.rel = c(0.4, 0.6),
  yrange.rel = c(0.4, 0.6),
  verbose = TRUE
)

Arguments

fit: optional; allows to provide a list of class momo.fit to simulate based on the fitted object. By default (NULL), no fitted object is used.
xrange: range of the x-dimension of spatial domain. Default: c(0,1).
yrange: range of the y-dimension of spatial domain. Default: c(0,1).
dxdy: resolution of grid in x and y direction. Default: c(0.1,0.1).
select: logical; if TRUE, allows to select cells in spatial grid. Default: FALSE.
plot.land: logical; If TRUE, plot land masses using the function maps::map. Default: FALSE.
keep.gpar: logical; If TRUE, do not overwrite the graphical parameters. Default: FALSE.
trange: range of model time. Default: c(0,1).
dt: resolution of model time steps. Default: 0.1.
nt: number of environmental fields. Default: 1.
rho_t: autocorrelation coefficient of temporal autocorrelation for environmental fields. Default: 0.85.
sd: standard deviation for simulation of environmental fields. Default: 2.
h: parameter of the matern covariance structure. Default: 0.2.
nu: parameter of the matern covariance structure. Default: 2.
rho_s: parameter of the matern covariance structure. Default: 0.8.
delta: parameter of the matern covariance structure. Default: 0.1.
zrange: range of the environmental covariate. Default: c(20, 28).
matern: logical; if TRUE (default), matern covariance structure is used for simulation of environmental fields.
diagonal: logical; if TRUE, diagonal neighbours are considered in neighbouring structure. Default: FALSE.
par: optional; allows to specify all or some of the parameters used for simulation. Default: NULL.
n.alpha: number of knots for taxis. Default: 3.
const.dif: logical; if TRUE (default), constant diffusion is assumed.
knots.tax: optional; allows to specify knots for the taxis component. Default: NULL.
knots.dif: optional; allows to specify knots for the diffusion component. Default: NULL.
correct.peclet: logical; if TRUE, the diffusion is increased until the peclet number is fulfilled. Default: FALSE.
use.ctags: logical; if TRUE (default), mark-recapture tags are simulated.
n.ctags: number of mark-recapture tags. Default: 500.
use.atags: logical; if TRUE (default), archival tags are simulated.
n.atags: number of archival tags. Default: 50.
trange.rel: optional; allows to specify a specific part of the time series in which tags are released. Default: NULL.
xrange.rel: optional; allows to specify a specific part of the x range of the spatial domain in which tags are released. Default: c(0.4,0.6).
yrange.rel: optional; allows to specify a specific part of the y range of the spatial domain in which tags are released. Default: c(0.4,0.6).
verbose: If TRUE, print information to console. Default: TRUE.

Value

A list of class momo.sim.

Examples

sim <- sim.momo()