crawl_interpolation: Single and Multiple Realizations Using crawl Package
In anipaths: Animation of Multiple Trajectories with Uncertainty

Single and Multiple Realizations Using crawl Package

crawl_interpolation(
  coord,
  delta.t,
  ID_names,
  max_refit_attempts,
  n.indiv,
  paths,
  paths.proj,
  paths.tranform.crs,
  simulation,
  simulation.iter,
  time.grid,
  Time.name
)

`coord`	A character vector of length 2 giving the names of the longitude/easting and latitude/northing columns in the `paths` `data.frame` (in that order). This is required if `paths` is not a `SpatialPointsDataFrame`.
`delta.t`	The gap in time between each frame in the animation. Specify one of `delta.t` or `n.frames`. If both are specified, `delta.t` is used.
`ID_names`	a list of names for each animal in the data
`max_refit_attempts`	an integer of number of attempts per individual to fit crawl model
`n.indiv`	an integer of the total number of unique animals in the data
`paths`	A list of all paths from each animals stored in a `data.frame` or `SpatialPointsDataFrame` object.
`paths.proj`	PROJ.4 string corresponding to the projection of the data
`paths.tranform.crs`	a character string of CRS coordinate projection transformation based on the animals' location.
`simulation`	logical. Generate simulation predictions to have multiple projects for the animal paths
`simulation.iter`	an integer of how many paths the crawl model will generate
`time.grid`	grid for synchronized interpolations
`Time.name`	The name of the columns in `paths` gving the observation times. This column must be of class `POSIXt`, or numeric.
`pt.colors`	A vector of colors to be used for each individual in the animation.