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Shapefile文件是美国ESRI公司发布的文件格式,因其ArcGIS软件的推广而得到了普遍的使用,是现在GIS领域使用最为广泛的矢量数据格式.官方称Shapefile是一种用于存储地理要素的几何位置和属性信息的非拓扑简单格式. 一般地,Shapefile文件是多个文件的集合,至少包括一个shp,shx以及dbf文件. shp主文件使用变长记录存储空间几何数据,支持点,线,面等多种几何类型.shx索引文件用于存储几何数据的索引信息,包含对主文件中每个记录长度的描述(注意不是空间索引)dbf表文…

Updating related data¶ 7 of 7 people found this helpful The Contoso University sample web application demonstrates how to create ASP.NET Core 1.0 MVC web applications using Entity Framework Core 1.0 and Visual Studio 2015. For information about the t…

In this lesson, you will learn how to set the default value for a particular property of a business class. For this purpose, the Priority property will be added to the DemoTask class created in the Set a Many-to-Many Relationship (XPO) lesson. To ini…

In this lesson, you will learn how to set the default value for a particular property of a business class. For this purpose, the Priority property will be added to the DemoTask class created in the Set a Many-to-Many Relationship (EF) lesson. To init…

In this lesson, you will learn how to set a display format and an edit mask to a business class property. For this purpose, the Task.StartDate, Task.DueDate, Task.PercentCompleted and PhoneNumber.Number properties' display format will be customized u…

前端杂谈: Attribute VS Property 第一个问题: 什么是 attribute & 什么是 property ? attribute 是我们在 html 代码中经常看到的键值对, 例如: <input id="the-input" type="text" value="Name:" /> 上面代码中的 input 节点有三个 attribute: id : the-input type : text valu…

In this lesson, you will learn how to display a multiline editor for string properties. For this purpose, the Task.Subject property will be used. By default, it is displayed via a single-line text box. 在本课中,您将学习如何显示字符串属性的多行编辑器.为此,将使用 Task.Subject 属性.…

P6 Professional Installation and Configuration Guide (Microsoft SQL Server Database) 16 R1       May 2016 Contents About This Guide...................................................................................... 11 Shared Topics in This Guide .…

http://thesecretlivesofdata.com/raft/ https://github.com/coreos/etcd   1 Introduction Consensus algorithms allow a collection of machines to work as a coherent group that can survive the failures of some of its members. Because of this, they play a k…