arcengine 转换CAD

这是利用ESRI公司的ArcEngine的接口开发的一个GIS小程序-This is the use of ESRI" s ArcEngine the development of a GIS interface applet

VB6.0+MAPX开发原理-VB6.0 Connection Principle Development

简单的springboot gis demomybatis-plus shirojtsgeojson序列化反序列化

一个用.Net Remoting技术实现的WebGIS例子-A use. Net Remoting technology examples of WebGIS

这是我亲自写的一个在GIS地图用的截图的东东，很简单实用，快开帐号吧，天呐。-This is what I personally wrote a GIS map with the Dongdong screenshot, it is simple, practical, quick to open your account, God.

本人参加MapGIS大赛获得三等奖的作品，这里发放3个技术文档与大家共享！-I participated in the works of MapGIS contest prize here three technical documents issued share!

3维地理信息系统数据模型的设计，很好的例子帮你解决问题-3-dimensional GIS data model design, a good example to help you solve the problem

不用注册就可以完成各种常用的地图投影：UTM、Albers、高斯、兰勃特、墨卡托等几十种投影，以及它们之间的相互转换；数据处理方式多样：单点、多点、文件方式；椭球可选；注册后功能更多。 -Registration can be completed without a variety of commonly used map projection: UTM, Albers, Gauss, Lambert, Mercator, etc. dozens of projection, and their mutual conversion data processing and diverse ways: a single point, multi-point , paper ellipsoid optional register more after the function.

本文结合DCT变换的特性，利用分形的Peano一hilbert扫描曲线，对基于DCT变换的图像编码方法进行了研究，并提出了改进方法。主要工作分为两个部分: 一是在分块DCT基础上的改进。对分块后生成的各图像块矩阵，不直接作二维DCT变换，而是先进行扫描，使之重排成一维向量，再进行一维DCT变换，这样可以减少运算量。 其次是对层次余弦变换编码部分的改进。使用层次DCT变换与零树编码相结合的方法，并在扫描编码过程中，按Peano一hilbert扫描顺序进行编码。这样不仅可以减少“块效应”，而且可以加快编码速度。-this paper the characteristics of DCT, using fractal Peano a Hilbert scanning curve, the DCT-based image coding method for the study and improvement of methods. The work is divided into two main parts : First, the DCT block on the basis of improvements. Right after block production of the image block matrix, not for direct two-dimensional DCT, but first scan, so they line up in a heavy-dimensional vector and then a peacekeeping DCT, thus reducing the amount of computation. Secondly, the level of cosine transform coding some of the improvements. The use level of DCT and zero tree coding combination of methods, coding and scanning process, according to a Hilbert Peano code scanning sequence. This will not only reduce the "blocking

H31GPS模拟接收机程序 H31GPS模拟接收机程序是用来模拟接收GPS卫星数据并显示卫星位置的模拟程序，数据来自己卫星星历。-this is made to test the GPS ,and the data is come from the GPS star.