osgearth 编译指南

用Visual C++开发的一个坐标转换系统大家打开看看就知道了-Visual C development of a coordinate transformation system opened see in the know

功能：坐标转换通用函数TRansCoo（已应用多年，正反算误差在1mm以内） 作者：倪尧    QQ：627957087 请点击左侧文件开始预览 ！预览只提供20%的代码片段，完整代码需下载后查看 加载中 侵权举报

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

arcgis api for JavaScript 框选查询 ,选中点高亮，并有弹框显示属性信息，

mapgis组件开发手册-mapgis Component Development Manual

GIS的基本的一些程序，欢迎大家过来下载-Some of the basic GIS procedures, welcome you come to download

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。第三部分-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. Part III

基于ArcGIS Engine符号化,在给定符号库（.style）文件和需要符号化的字段的条件下，同时对每个图层相应的字段进行符号化。-Based on ArcGIS Engine symbolic, in a given symbol libraries (. Style) file and the need for symbolic field conditions, while the corresponding fields for each layer symbolic.

实现地理信息存储影像数据常用的TIFF格式解析，支持按行读取，按块读取，整体读取，抽稀读取，支持基于TFW格式的坐标位置读取。

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.