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nlm_planargradient

Source: R/nlm_planargradient.R
nlm_planargradient.Rd

Simulates a planar gradient neutral landscape model.

Usage

nlm_planargradient(
  ncol,
  nrow,
  resolution = 1,
  direction = NA,
  user_seed = NULL,
  rescale = TRUE
)

Arguments

ncol

[numerical(1)]
Number of columns forming the raster.

nrow

[numerical(1)]
Number of rows forming the raster.

resolution

[numerical(1)]
Resolution of the raster.

direction

[numerical(1)]
Direction of the gradient in degrees, if unspecified the direction is randomly determined.

user_seed

[numerical(1)]
Set random seed for the simulation.

rescale

[logical(1)]
If TRUE (default), the values are rescaled between 0-1.

Value

RasterLayer

Details

Simulates a linear gradient sloping in a specified or random direction.

References

Palmer, M.W. (1992) The coexistence of species in fractal landscapes. The American Naturalist, 139, 375 - 397.

See also

nlm_distancegradient, nlm_edgegradient

Examples

# simulate planar gradient
planar_gradient <- nlm_planargradient(ncol = 200, nrow = 200)

if (FALSE) { # \dontrun{
# visualize the NLM
raster::plot(planar_gradient)
} # }