C# .NET Core Google Api (Maps, Places, Roads, Search, Translate). Supports all endpoints and requests / responses.

A module used to change the information of user action entered by various input devices such as touch screen or mouse into the logical virtual coordinates.

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 Dart library for geodesic and trigonometric calculations working with points and paths

A simple Math coordinate system on Android. 绘制坐标轴 函数图像

Toolkit for apply point transformations for vector.

Python bindings for ERFA routines

get nearby location by coordinate from eloquent laravel

Astronomical space coordinate and time conversion. Calculate Julian day, local sidereal time and ecliptic obliquity with great precision.

diagnostic analyses and calculations in contour-based coordinates

A small and efficient single-file, header-only library written in modern C++ library to test whether a coordinate is inside a polygon to realize, for instance, WGS84 geofencing.

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。

A Java library for representing latitude, longitude and cardinal points of the compass, and calculating distance and bearing between points

A collection of libraries to convert between Latitude / Longitude and map grid references, particularly the Ordinance Survey National Grid

Radon Transform(Sinogram) of Image for Openframeworks.

Small tool to coordinate volunteers and meetings — 📆🗃

Detects country by given coordinate

Coordinate Reference System Transformations. This is a .NET library implemented with F#, but also usable from C#. Most of the test code is actually written with C#. The third-part libraries used from the F# code may also have been implemented with C#.

SphericalMercator in Swift implementation from original JS implementation at https://github.com/mapbox/sphericalmercator/blob/master/sphericalmercator.js

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.