GeographicLib is a small C++ library for: geodesic and rhumb line calculations; conversions between geographic, UTM, UPS, MGRS, geocentric, and local cartesian coordinates; gravity (e.g., EGM2008) and geomagnetic field (e.g., WMM2020) calculations.
This project helps to digitize field data for a certain Bird Census method.
Namely, bird census based on personal inspection or small (~10 km^2) regions with recording birds' position and behaviour on paper.
This project makes it easy to annotate such field data and to make this data available for statistical analysis.