Spatial Validation

Spatial validation provides a collection of validation measures including 1. fragmentations (entropy, simpson), 2. join count ratio, 3. compactness (isoperimeter quotient) and 4. diameter.

spatial_validation(sf_obj, clusters, w)

Arguments

sf_obj

An sf (simple feature) object

clusters

A cluster classification variable (categorical values from a dataframe or values returned from cluster functions)

w

An instance of Weight class

Value

A list with names "Is Spatially Constrained", "Fragmentation", "Join Count Ratio", "Compactness", and "Diameter".

Examples

if (FALSE) { # \dontrun{
library(sf)
guerry_path <- system.file("extdata", "Guerry.shp", package = "rgeoda")
guerry <- st_read(guerry_path)
queen_w <- queen_weights(guerry)
data <- guerry[c('Crm_prs','Crm_prp','Litercy','Donatns','Infants','Suicids')]
clusters <- skater(5, queen_w, data)
results <- spatial_validation(guerry, clusters, queen_w)
results
} # }