Geocoding Locations with Turf Mapbox SDK

Implement common Turf functionalities in Java. Use-case + Full Source Code.

Most Geographic Information System (GIS) practitioners who are familiar with Geospatial web applications have encountered the JavaScript utility known as TurfJS, an open-sourced Geospatial Analysis tool. While Turf is known for its versatility and wide array of Geospatial functionalities, 1 of its common use-cases often involves geocoding specific location coordinates within custom boundaries— i.e. Tagging the specific area/region/zone to a target location.

For more in-depth details, please refer to the article below:

Using Turf.js to Geocode coordinates with custom boundaries

To illustrate this functionality, take the country Singapore as an example where the island is divided into 5 separate regions — Central, North, North-East, East & West.

Illustration by Author | The 5 different regions which Singapore is divided into

In order to tag the correct region which the ❝National Dental Centre (NDC)❞ building resides in, two particular spatial data inputs would be required:

Input (1) The Geometric Polygon/Multi-Polygon features of the 5 regions (assigned as a GeoJSON object in the demo HTML code — boundaries)

Input (2) The building coordinates of the target location — National Dental Centre (assigned as a GeoJSON object in the demo HTML code— targetLocations)

Note: The full HTML code implementation can be found here

Output is as follows:

{
  "type": "FeatureCollection",
  "features": [
    {
      "type": "Feature",
      "properties": {
        "BLK_NO": "5",
        "BUILDING": "NATIONAL DENTAL CENTRE",
        "ROAD_NAME": "SECOND HOSPITAL AVENUE",
        "POSTAL": "168938",
        "REGION_N": "CENTRAL REGION",
        "REGION_C": "CR"…