高斯正反算投影代码

C#下面的地图引擎源代码,功能非常强大，研究GIS必备-the map below engine source code, which is very strong, research essential GIS

根据提供的x、y坐标，用程序在mapinfo里自动加点-According to the x, y coordinates, using the procedures in mapinfo automatically add points

用Mapx计算两个叠加图形的重叠部分的面积-MapX calculated using two superimposed graphics part of the area of overlap

最短路经算法示例（需要mo2.1和vb）-shortest pass algorithm examples (and need mo2.1 vb)

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

用mapx设计智能小区的研究，总体介绍了智能小区系统解决的方案，及在vc++中用到的相关的mapx函数-Intelligent community with MapX design research, in general, introduced Intelligent Community System for solutions, and vc++ Used in MapX function related

基于windows mobile的gis开源代码-Windows mobile based on the gis open-source code

很好的一个导航地图的例子。需要的可以下载下来好好研究下，希望对你们有用处-A good example of a navigation map.

应用背景随着地震勘探精度的提高,各向异性对于常规克希霍夫叠前深度偏移效果的影响已不容忽视.研究了利用P波非双曲旅行时求取各向异性参数的方法,当道集的排列长度远大于勘探目的层深度时,P波走时资料包含的信息可以用来确定VTI介质的各向异性参数关键技术利用VTI介质的CMP道集,研究了二步法提取η参数的方法,即先利用短排列地震数据求取均方根动校正速度,再利用长排列数据和水平速度扫描法得到水平速度,通过转换得到各向异性η参数；采用基于声学近似的VTI介质程函方程,通过各向异性射线追踪计算旅行时

ArcObjects+VC 通过两个MapControl控件组合实现地图鹰眼功能。-ArcObjects+ VC through two control combinations MapControl realize Hawkeye map features.