map scale mapping of source code, demonstration of a wide range of map scale

画线演示-line drawing demonstration

常用地图投影转换公式。包括高斯投影、墨卡托投影、通用墨卡托投影、兰勃特投影等投影转换的详细公式。-The conversion formula commonly used map projection. Including the Gaussian projection, Mercator projection, Mercator projection GM, Lambert projection, such as the detailed formula for projection conversion.

文件对GIS的基本构成、运行环境、数据结构、基本功能、工程设计等进行了详细的描述，对GIS开发人员有很大的帮助。-On the GIS the basic structure, operating environment, data structures, basic functions and engineering design carried out a detailed description of the development of the GIS staff very helpful.

MAPGIS6.7 软件狗. 使用户不需要狗即可以使用MAPGIS6.7.-MAPGIS6.7 soft dog. It makes users to use mapgis6.7 without hard dog.

Navit is a open source (GPL) car navigation system with routing engine. It s modular design is capable of using vector maps of various formats for routing and rendering of the displayed map. It s even possible to use multiple maps at a time. The GTK+ or SDL user interfaces are designed to work well with touch screen displays. Points of Interest of various formats are displayed on the map. The current vehicle position is either read from gpsd or directly from NMEA GPS sensors. The routing engine not only calculates an optimal route to your destination, but also generates directions and even speaks to you.

ArcGis Engine : Gis Programing, VBA, C-ArcGis Engine : Gis Programing, VBA, C++

本文提出地形图纸等高线的矢量化，进而提出生成三维地形模型的工程问题，阐述了扫描、预处理、细化等步骤-terrain contour drawings of vectorization, leading to formation of three-dimensional terrain model works, expounded the scanning, pretreatment steps such as thinning

实现了距离权重倒数插值的功能。地理信息系统DEM中常用到的算法。-Realize the distance weighting interpolation countdown function. DEM Geographic Information System used in the algorithms.

一个简单的地理信息系统实现的C++源代码。后台使用mysql连接数据库。-a simple geographic information systems of the C source code. Background use mysql connect to the database.