geocomplexity (version 0.2.0)

geocs_raster: geocomplexity for spatial raster data based on geographical similarity

Description

This function calculates geocomplexity for spatial raster data based on geographical similarity.

Usage

geocs_raster(r, order = 1, normalize = TRUE, similarity = 1, method = "spvar")

Value

A SpatRaster object

Arguments

r

SpatRaster object or can be converted to SpatRaster by terra::rast().

order

(optional) The order of the adjacency object. Default is 1.

normalize

(optional) Whether to further normalizes the calculated geocomplexity. Default is TRUE.

similarity

(optional) When similarity is 1, the similarity is calculated using geographical configuration similarity, otherwise the cosine similarity is calculated. Default is 1.

method

(optional) When method is spvar, variation of the similarity vector is represented using spatial variance, otherwise shannon information entropy is used. Default is spvar.

Examples

library(terra)
m1 = matrix(c(3,3,3,3,1,3,
              3,3,3,2,1,2,
              3,3,3,1,2,1,
              1,3,2,2,2,2,
              2,2,2,1,1,2,
              1,2,1,1,1,1),
           nrow = 6,
           byrow = TRUE)
m1 = rast(m1)
names(m1) = 'sim1'
m2 = m1
set.seed(123456789)
values(m2) = values(m1) + runif(ncell(m1),-1,1)
names(m2) = 'sim2'
m = c(m1,m2)
gc1 = geocs_raster(m,1)
gc2 = geocs_raster(m,2)
gc1
plot(gc1)
gc2
plot(gc2)