Python interface to PROJ (cartographic projections and coordinate transformations library)
pure-Python (Numpy optional) 3D coordinate conversions for geospace ecef enu eci
A zero-dependency Go package for coordinate transformations.
各坐标系简介与转换。包括WGS84（地球坐标系）、GCJ02（火星坐标系）和BD09（百度坐标系）
A simple header-only, single-file library to handle WGS84 coordinate to Cartesian coordinate transformations for C++.
Python library for numerical integration, interpolation, and differentiation on (molecular) grids.
basic python module for gnss analysis
Transfrormation between Cartesian coordinates and redundant internal coordinates
倾斜模型坐标高效转换工具
Matlab 3D coordinate conversions for geospace ecef enu ECI
Modern Fortran 3D coordinate conversions for geospace ecef enu eci
Find similarity transformation parameters, given a set of 3-D control points, using dual quaternions.
坐标转换，包括 * 各地图API坐标系统比较与转换; * WGS84坐标系：即地球坐标系，国际上通用的坐标系。设备一般包含GPS芯片或者北斗芯片获取的经纬度为WGS84地理坐标系, * 谷歌地图采用的是WGS84地理坐标系（中国范围除外）; * GCJ02坐标系：即火星坐标系，是由中国国家测绘局制订的地理信息系统的坐标系统。由WGS84坐标系经加密后的坐标系。 * 谷歌中国地图和搜搜中国地图采用的是GCJ02地理坐标系; BD09坐标系：即百度坐标系，GCJ02坐标系经加密后的坐标系; * 搜狗坐标系、图吧坐标系等，估计也是在GCJ02基础上加密而成的。
Coordinates in JAX
Simple Gauss-Krüger transformation for C++
Orthogonal Multipole Magnetic Basis Vectors - Complete orthogonal vector basis with accurate field-line mapping of electric fields and ion drifts within multipole magnetic fields
Convert geodetic coordinates to geomagnetic coordinates via IGRF web service
ProjNet4GeoAPI-For-Unity allows immediate processing of geo-coordinates in the Unity game engine. The package is provided as a Unity package (UPM) and also integrates and relies on the commonly used C# conversion library ProjNet4GeoAPI.
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