map.habitat {red}

Map species distribution of habitat specialist.

Description

Mapping of all habitat patches where the species is known to occur.

Usage

map.habitat(
  longlat,
  layer,
  move = TRUE,
  mcp = FALSE,
  points = FALSE,
  eval = TRUE
)

Arguments

longlat

Matrix of longitude and latitude or eastness and northness (two columns in this order) of each occurrence record.

layer

RasterLayer object representing the presence/absence (1/0) of a single habitat type.

move

If TRUE, identifies and moves presence records to closest cells with suitable habitat. Use when spatial error might put records outside the correct patch.

mcp

If TRUE, all habitat patches inside the minimum convex hull polygon encompassing all occurrence records are converted to presence.

points

If TRUE, force map to include cells with presence records even if suitable habitat was not identified.

eval

If TRUE, build a matrix with EOO (from raw data), EOO (from model), AOO (from raw data) and AOO (from model).

Details

In many cases a species has a very restricted habitat and we generally know where it occurs. In such cases using the distribution of the known habitat patches may be enough to map the species.

Value

One raster object and, if eval = TRUE, a matrix with EOO (from raw data), EOO (from model), AOO (from raw data) and AOO (from model).