Guangzhou in 2009 the latest vector map (MapInfo format)

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

VB6.0+MAPX

提供数据读取和转换，这里数据是空间数据，shp,gml ,wkt,wkb等文件读取以及它们之间的转换．-Data reading and conversion, where the data is spatial data, shp, gml, wkt, wkb and other documents to read, as well as the conversion between them.

读写中国地球空间数据交换格式源码 读写中国地球空间数据交换格式源码-read and write Chinese geospatial data exchange format source code to read and write Chinese geospatial data exchange format FO

环保模型，包括水污染模型，大气污染模型及爆炸模型，基于ArcGIS Engine开发。-Environmental models, including water pollution model, air pollution models and explosion models, based on ArcGIS Engine development.

Simple example VHDL code for registers

通过gps采样数据，完成已知两点经纬度求距离。-Sampling through the gps data, the completion of known latitude and longitude points for the distance.

用VC++开发基于MAPGIS67 SDK的电源管理信息系统，有玫瑰设计和详细说明

arcgis培训资料，对于想了解arcgis和即将进入arcgis领域的软件人员很有帮助-arcgis training materials, for arcgis and want to know is about to enter the field of software arcgis helpful staff

ArcGIS Engine为用户提供了整套功能强大的GIS框架，本文档介绍如何快速的建立和发布使用ArcGIS Engine定制的GIS应用程序。第一部分。-ArcGIS Engine provides users with a full set of powerful GIS framework, this document describes how to quickly build and publish using ArcGIS Engine customized GIS applications. The first part.