Package index • spatialrisk

Reference

spatialrisk is organised around fixed-radius aggregation, hotspot detection, polygon-based spatial reporting, and supporting spatial data. Most users can start with the core functions below, while lower-level workflow functions are available for more advanced use.

Core functions

Main entry points for common fixed-radius concentration and reporting workflows.

concentration_hotspot(): Find fixed-radius concentration hotspots
radius_sum(): Sum values within a radius around target coordinates
points_within_radius(): Find points within radius around one or more centre coordinates
summarise_points_by_polygon(): Summarise point exposures by reporting polygon

Fixed-radius aggregation

Evaluate point-level values and observations within a fixed radius.

points_within_radius(): Find points within radius around one or more centre coordinates
radius_sum(): Sum values within a radius around target coordinates

Concentration and hotspot detection

Find maximum fixed-radius concentrations and inspect the search workflow.

Main API

concentration_hotspot(): Find fixed-radius concentration hotspots

Advanced hotspot workflow

Lower-level functions underlying concentration_hotspot() for inspecting or running the search steps separately.

prepare_spatialrisk() select_candidates() optimize_hotspot() plot(<spatialrisk_hotspot_workflow>): Prepare fixed-radius concentration hotspot analysis
plot(<hotspot>): Plot concentration hotspot results

Polygon summaries and visualisation

Aggregate point exposures to reporting polygons and visualise spatial values.

summarise_points_by_polygon(): Summarise point exposures by reporting polygon
choropleth(): Create a choropleth map of polygon-level values
map_points(): Create interactive point map

Data

Example portfolios, administrative boundaries, and weather data used in package examples and workflows.

Example datasets

Groningen: Example addresses in Groningen
insurance: Example insurance portfolio

Administrative and spatial boundaries

nl_gemeente: Municipalities in the Netherlands
nl_provincie: Provinces in the Netherlands
nl_corop: COROP regions in the Netherlands
nl_postcode2: Two-digit postcode regions in the Netherlands
nl_postcode3: Three-digit postcode regions in the Netherlands
nl_postcode4: Four-digit postcode regions in the Netherlands

Weather datasets

knmi_historic_data(): Retrieve historic weather data for the Netherlands
knmi_stations: KNMI weather stations

Spatial utilities

General coordinate conversion, distance, and simple spatial display helpers.

haversine(): Haversine great-circle distance
convert_crs_df(): Convert Coordinate Reference System (CRS)

Deprecated

Deprecated functions retained for backward compatibility.

concentration(): Deprecated alias for radius_sum()
points_in_circle(): Deprecated alias for points_within_radius()
find_highest_concentration(): Deprecated alias for concentration_hotspot()
highest_concentration(): Deprecated geohash hotspot search
neighborhood_gh_search(): Deprecated geohash neighbourhood refinement
plot_points(): Deprecated alias for map_points()
points_to_polygon(): Deprecated alias for summarise_points_by_polygon()
choropleth_ggplot2(): Choropleth map of an sf object with ggplot2
interpolate_spline(): Interpolate values using spherical splines
plot(<conc>): Plot deprecated geohash hotspot results
plot(<neighborhood>): Plot deprecated geohash neighbourhood results