创建空间索引结构R树的源程序，解压后的文件中有readme文档。...

This program demonstrates the usage of the select() routine.

VB＋MapX 实现图层的下拉功能.如打开中国地图,下拉至四川,再到成都地区地图-VB MapX realize the drop-down feature layers. Such as to open the map of China, the drop-down to Sichuan, Chengdu and then map

一个汽车GPS导航系统,非常有价值,内有源代码,能在VC6下直接编译运行-A car GPS navigation systems, is very valuable, with the active code, can direct the compiler to run under VC6

VC++做的GIS源码very good,please give good say-VC++ Source GIS do very good, please give good say

C#,ArcGis入门开发教程,简单易学-C#, ArcGis Starter tutorials, easy to learn

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

Intersect_Tins.rar. 实现不规则三角网的内插。　求取其截面等。-Intersect_Tins.rar. realization irregular triangular net interpolation. Asks to take its section and so on.

应用背景本源码用于实现地理信息数据库（MDB文件）中数据的自动整合，以减少地理信息数据库整合升级过程中的大量人工重复作业，总体上分为数据输入、数据列表、主图、鹰眼图、植被类型整合、地名编码整合、水系整合、数据展示、软件帮助9个模块儿。关键技术代码主要依靠ArcGIS Engine的二次开发，采用C#语言，在VS2010平台上实现了对居民地地名层缺少地名编码、植被注记混乱、面域水系与线形水系的HYDC码不统一等问题，分别制定了AGNP（居民地地名）层赋GNID（地名编码）字段值、VEGA（植被类型）层赋TYPE（植被注记）字段值、HYDL（线形水系）与HYDA（面域水系）层统一HYDC字段值等解决方案

在测绘制图和地理信息系统中,地模应用,首先要建立三角网-In the mapping of cartography and geographic information systems, and mold applications, we must first establish a triangulation

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