greenR (version 0.0.1.6)

nearest_greenspace: Calculate and Visualize the Shortest Walking Path to Specified Type of Nearest Green Space with Estimated Walking Time

Description

Determines the nearest specified type of green space from a given location and calculates the shortest walking route using the road network optimized for walking. The result is visualized on a Leaflet map displaying the path, the starting location, and the destination green space, with details on distance and estimated walking time.

Usage

nearest_greenspace(
  highway_data,
  green_areas_data,
  location_lat,
  location_lon,
  green_space_types = NULL,
  walking_speed_kmh = 4.5,
  osrm_server = "https://router.project-osrm.org/"
)

Value

A Leaflet map object showing the route, start point, and nearest green space with popup annotations.

Arguments

highway_data

List containing road network data, typically obtained from OpenStreetMap.

green_areas_data

List containing green areas data, obtained from get_osm_data.

location_lat

Numeric, latitude of the starting location.

location_lon

Numeric, longitude of the starting location.

green_space_types

Vector of strings specifying types of green spaces to consider.

walking_speed_kmh

Numeric, walking speed in kilometers per hour, default is 4.5.

osrm_server

URL of the OSRM routing server with foot routing support, default is "https://router.project-osrm.org/".

Examples

if (FALSE) {
  data <- get_osm_data("Fulham, London, United Kingdom")
  highway_data <- data$highways
  green_areas_data <- data$green_areas
  map <- nearest_greenspace(highway_data, green_areas_data, 51.4761, -0.2008, c("park", "forest"))
  print(map) # Display the map
}