除了地图基本的放大缩小等功能,在webgis上的二次开发中,查询功能 通常作为需求的一部分需要我们去实现,今天就给大家详细的分析实例代码中的查询功能:Query features from a FeatureLayer 话不多说,进入今天的实例代码的分析 网址:https://developers.arcgis.com/javascript/latest/sample-code/featurelayer-query/index.html 界面: 然后我们来看代码: 第一段还是引用,这里我没标注释…

1. Quick Sort: int partition(int A[], int p, int r) { int x = A[r]; // Pivot element int i = p - 1; // Index of last element that not larger than pivot element for(int j = p; j < r; ++j) { if(A[j] <= x) { ++i; exchange(A[i], A[j]); } } exchange(A[i+…

空间分析和空间查询是WebGIS有别于其他Web平台的特点.到这一章,就开始步入空间分析的内容了. [Search widget] 介绍空间查询的核心小部件"Search". [Search widget with multiple sources] 在多种信息源中进行空间搜索. [Query features from a FeatureLayer] 这个是在要素图层中进行查询.注意,查询(Query)和搜索(Search)的区别. (其实我也不是很清楚这个的界限) 感觉查询就是在地…

Enhancing the Application: Advanced JDBC Features This chapter describes additional functionality that you can use in your Java application. Some of these features have not been implemented in the sample application, while some features are enhanceme…

refer: http://sqlblog.com/blogs/paul_white/archive/2012/04/28/query-optimizer-deep-dive-part-1.aspx    SQL是一种结构化查询语言规范,它从逻辑是哪个描述了用户需要的结果,而SQL服务器将这个逻辑需求描述转成能执行的物理执行计划,从而把结果返回给用户.将逻辑需求转换成一个更有效的物理执行计划的过程,就是优化的过程. 执行SQL的过程: Input Tree We start by looking…

目录 主要挑战 主要的贡献和创新点 提出的方法 总体框架与算法 Vanilla pseudo label sampling (PLS) PLS with adversarial learning Training losses 实验与结果 结论 导言 文章提出了一种新的三元组损失 HSoften-Triplet-Loss,在处理one-shot Re-ID任务中的噪声伪标签样本方面非常强大.文章还提出了一种伪标签采样过程,确保了在保持高可靠性的同时为训练图像形成正对和负对的可行性.与此同时,文章…

Mirror of Apple’s iOS samples This repository mirrors Apple’s iOS samples. Name Topic Framework Description ABUIGroups Data Management(Contact Data) AddressBook ABUIGroups shows how to check and request access to a user’s address book database. It al…

1. Introduction 1.1. About 1.2. Sphinx features 1.3. Where to get Sphinx 1.4. License 1.5. Credits 1.6. History 2. Installation 2.1. Supported systems 2.2. Compiling Sphinx from source 2.2.1. Required tools 2.2.2. Compiling on Linux 2.2.3. Known comp…

使用osg加载fbx模型,需要自己编译fbx插件,编译流程与插件使用案例如下 代码地址:https://github.com/shelltdf/osgFBX CMake Error: The following variables are used in this project, but they are set to NOTFOUND.Please set them or make sure they are set and tested correctly in the CMake fil…

Recently I read a book, PowerShell 3.0 Advanced Administration Handbook, which I found really worthy of recommending. Actually, I think this is a good book for enterprise IT administrators, IT professionals, and all kinds of PowerShell users. It give…