OpenStreetMap (OSM) Data Scraping and Folium Visualization

OpenStreetMap

OpenStreetMap (OSM) is a free, open geographic database updated and maintained by a community of volunteers via open collaboration. Contributors collect data from surveys, trace from aerial imagery and also import from other freely licensed geodata sources.

Link to OpenStreetMap:

Map: https://www.openstreetmap.org/

Wiki: https://wiki.openstreetmap.org/

Folium

folium builds on the data wrangling strengths of the Python ecosystem and the mapping strength of the leaflet.js library. Manipulate data with Python, then visualize it on a Leaflet map via folium. Link to folium:

https://python-visualization.github.io/folium/

https://pypi.org/project/folium/

Concept

In this repository, I collect data of medical facilities (hospital, clinic, doctor, dentist, and pharmacy) in Bali province, Indonesia. The data contains 4 atrributes: name of the medical facility, type, and coordinates in latitude and longitude. The scraped data is saved in a csv file and then displayed in simple html page.

Area of Interest: Bali Province, Indonesia

Visualize the area of interest with library folium:

Scraping data from OpenStreetMap (OSM)

If we search keyword "hospital in Bali" in OpenStreetMap, the result will be like this:

Here, I will collect data of medical facilities consisting clinics, dentists, doctors, hospitals, and pharmacies.

Libraries, API and Query

I use 3 libraries for scraping data:

• pandas for manipulating and analyzing data,
• requests to make and process HTTP requests,
• json to parse JSON into dictionary or list.

API link for OpenStreetMap: http://overpass-api.de/api/interpreter

Query for searching medical-facilities in Bali, Indonesia:

[out:json];
(area['name:id'='Provinsi Bali'];
node[amenity~'(clinic|dentist|doctors|hospital|pharmacy)'](area);
);
out;

Output

There are 2 output files from this project:

1. A CSV file contains data of medical facilities in Bali.
2. An HTML page contains map for visualizing the data.

Since github can't render html page correctly, I put the final output of this code in my blog here.