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Geocoding Distance🐞
- Geocoding involves transforming location names into geographical coordinates and vice versa. Nominatim can power search boxes on websites for free-form or structured queries.
- Calculating geographical distance between two points on Earth's surface can be done using the Haversine formula, which considers Earth's spherical shape.
- Delphi and Python functions are provided for calculating distances between coordinates using the Haversine formula.
- The article demonstrates how to get the distance between Bern and Paris using latitude and longitude coordinates in Delphi and Python.
- There is an explanation of the great-circle distance, orthodromic distance, or spherical distance, which is the distance along the great-circle arc between two points on a sphere.
- Geocoding APIs like Nominatim and OpenWeather support the conversion of location names into geographical coordinates and vice versa.
- The article provides code examples using Nominatim's geocoding API to retrieve coordinates and addresses for given locations.
- Troubleshooting tips are given for resolving '403 Forbidden' errors with the Nominatim API, including checking API usage limits and using proper User-Agent headers.
- The article discusses different User-Agent strings and their importance in API requests to comply with Nominatim's usage policy.
- Different solutions are compared for geolocation distance calculations, highlighting considerations such as performance, storage, and scalability in various environments.
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