hci_diff: Calculate difference map

In geohabnet: Geographical Risk Analysis Based on Habitat Connectivity

Calculate difference map

Description

This function produces a map of the difference in ranks between mean habitat connectivity and habitat availability.

Usage

hci_diff(x, y, global, geoscale, res = reso(), outdir = tempdir(), plt = TRUE)

Arguments

x	SpatRaster.
y	SpatRaster.
global	Logical. Select TRUE if a global analysis is desired, FALSE otherwise. east and west are required when TRUE.
geoscale	Numeric vector. x will be cropped to this extent.
res	Numeric. This parameter refers to the spatial aggregation factor. This value is the number of cells that are grouped when aggregating a raster layer from fine to coarse spatial resolution to reduce computational costs. Setting this parameter to 1 would not aggregate the raster layers. Default is reso().
outdir	Character. Output directory for saving raster in TIFF format. Default is tempdir().
plt	TRUE if need to plot mean map, FALSE otherwise.

Details

Ideally, the function is tested to yield desired results when length(which(y[] > 0)) > length(which(x[] > 0)).

Value

RiskMap. Contains result in the form of SpatRaster objects and file path of the saved maps.

geohabnet documentation built on May 26, 2026, 9:06 a.m.