delphi+Mapx 例子，包括Mapx的放大，缩小等一些基本功能

在GIS中鹰眼功能，很少的东东，可以下载来测试用-Eagle Eye in the GIS in the function, very little Dongdong, you can download to test with

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

MAPINFO的应用，实用的程序。可以对地图进行许多复杂的操作-MapInfo applications, practical procedures. The map can be many complex operation!

多边形拓扑关系生成方法实现，数据以shapefile线文件为基础。-Polygon topology generation method to achieve the data to shapefile line of the file-based.

ArcGIS+C#二次开发实现了地图编辑、空间分析、网络分析等功能-ArcGIS+ C# secondary development to achieve the map editing, spatial analysis, network analysis and other functions

高斯正反算的代码，每个代码都有详尽的注解，可以供初学者和需要编写小程序的学生提供借鉴和参考！

vc++ 开发 GIS 与 GPS ，提供在线首发GPS定位信息，显示坐标点，轨迹回放，GIS地图放大、缩小、选种等等操作。-vc development of GIS and GPS, the first online GPS signal coordinates, track intervals, GIS maps to zoom, selection, etc. operation.

GDAL 用于raster文件的读写功能-GDAL for raster file read and write functions

用VC++重新写的GIS底层开发中特殊线型,面填充,地理符号显示的源代码-VC re-write the bottom of GIS Development special linear, noodles filled, geographic symbols are used to indicate the source code

基于MAPGIS的勘探剖面数据库设计与实现（caj格式）-MAPGIS exploration Profile Database Design and Implementation (CAJ format)