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说明：  Ｏｒａｃｌｅ　ＳＰＡＴＩＡＬ的说明介绍之二(Note 2 introductions)

GIS专业入门必修课-多边形左转算法，首先在屏幕上点取点，后连接三角形，最后自动形成多边形。(GIS professional entry courses- turn left polygon algorithm, the first check point on the screen points, after connecting the triangle, and finally form a polygon automatically.)

利用Lod的技术，对地形进行实时的渲染，并可以在场景中进行漫游(Hitomi Lod cavity using扲ㄛ Qinhua summarized倛vehicles shallow cavity奀wife of mother)

基于python语言的ARCGIS中shp图形文件的读取(SHP based on ARCGIS Python language of the graphic file reads)

R*树，具有添加，删除，查询节点功能，是搜索算法中的一种，常用于GIS软件中。(R* tree, with add, delete, query node function, is a search algorithm, commonly used in the GIS software.)

校园GIS系统，自己完成的校园浏览查询系统，没有数据。(GIS System of School。)

文件为IDL程序代码，在ENVI+IDL环境下运行。处理遥感图像，生成NDVI、TNDVI、RVI等植被指数，为后续研究提供基础(Program code for the IDL files in ENVI+ IDL environment to run. Remote sensing image processing to generate NDVI, TNDVI, RVI and other vegetation indices, provide a basis for further study)

arcgis vba 点生产面 这个是arcgis 数据处理的基本应该，由于arcgis toolbox里面没有所有自忆写了一个vba 需要放到vba中点运行(arcgis vba point_to_polygon)

logistic、malthus人模型都可以用于预测呈指数增长的数据模型，预测未来的人口的等数据，是由人口学家提出的，可用于预测未知的数目，以及检测一些模型所得结果的正确性。(logistic, malthus human model can be used to predict an exponential growth in data model, to predict the future, such as population data, is proposed by the demographer can be used to predict the number of unknown, as well as a number of model testing the correctness of the results.)

GIS数据批量导入sde 目前支持shp,coverage,栅格数据批量导入到sde中，可指定目标数据集名称、输出的要素类名称，如果sde中已有该图层数据，则继续追加(GIS data sde currently supports the bulk import shp, coverage, raster data into sde quantities, you can specify the target data set name, the output feature class name, if already in the sde layer data, will continue to additional)