MapX开发培训PPT.rar

实现空间分析、属性查询、框架设计等

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

一个jacascript的漂浮广告Demo-Advertisement jacascript floating a Demo

一个电子地图的课程设计,其实还没做完,不过老师要求的功能都差不多实现了,打算在此基础上叠加地貌晕渲的,不过在三角剖分上遇到了些麻烦~,文件夹009中包含了数据的一部分,因为数据大概有十几M就只弄了一部分,还有一个属性数据库.及有些头文件-an electronic map of curriculum design, in fact not done, but teachers required functions are almost the intention on the basis of this superposition Hillshading, but the triangulation encountered a bit of trouble ~, 009 folder contains the data part, because there are about a dozen data M just get the part, there is an attribute database. and some of the first documents

插件式GIS书籍的原代码，全套代码供大家一起交流和学习-GIS plug-in the original code book, a full set of code for everyone to learn together and communicate

arcgis server9.2客户端js说明手册-arcgis server9.2 client js instruction manual

应用背景15°有限差分偏移建立在波动方程或简化了的波动方程差分基础上的偏移方法。15度偏移差分法实现地震波偏移。反射地震方法是根据在地面上以一定方式进行弹性波激发，并在地面的一定范围（孔径）内记录来自地下弹性分界面的反射波来研究地下地质岩层结构及其物性特征的一种方法。关键技术本代码建立在波动方程或简化了的波动方程差分基础上的偏移方法。常用的有15°差分法和45°...15°时间偏移方程为式中c为波速，τ为以双程时间表示的深度，t，x和P参见“叠前部分偏移”条件。

通过调用工作空间资源库对象，来对地图图层风格进行设置-The work of space resources by calling the library objects to the map layer style settings

直接解析shapefile文件，并将其绘制成图-Direct analytic shapefile documents, and map

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