make.grid: makes spatial grid
In eldarrak/FLightR: Reconstruct Animal Paths from Solar Geolocation Loggers Data

make.grid

R Documentation

makes spatial grid

Description

This function makes a rectangular grid with use defined boundaries and probabilities of being stationary.

Usage

make.grid(
  left = -180,
  bottom = -90,
  right = 180,
  top = 90,
  distance.from.land.allowed.to.use = c(-Inf, Inf),
  distance.from.land.allowed.to.stay = c(-Inf, Inf),
  plot = TRUE,
  return.distances = FALSE,
  probability.of.staying = 0.5
)

Arguments

`left`	- left boundary in degrees (-180 <= left <= 180)
`bottom`	- lower boundary in degrees (-90 <= bottom <= 90)
`right`	- right boundary in degrees (-180 <= right <= 180)
`top`	- top boundary in degrees (-90 <= right <= 90)
`distance.from.land.allowed.to.use`	- define how far from the shore animal could occur. Unit - km, negative values are for inland and positive for offshore directions. `Inf` stays for infinity
`distance.from.land.allowed.to.stay`	- define how far from the shore animal could stay stationary between twilights. Unit - km, negative values are for inland and positive for offshore directions. `Inf` stays for infinity
`plot`	show a plot of final grid.
`return.distances`	- return distances to the shoreline
`probability.of.staying`	- assigned probability value for grid cells that do not satisfy `distance.from.water.allowed.to.stay`

Value

dataframe with coordinates(lon and lat) and probability.of.staying

Author(s)

Eldar Rakhimberdiev

Examples

Grid<-make.grid(left=-14, bottom=30, right=13, top=57,
  distance.from.land.allowed.to.use=c(-Inf, Inf),
  distance.from.land.allowed.to.stay=c(-Inf, Inf))

eldarrak/FLightR documentation built on Sept. 29, 2024, 8:32 p.m.