NetworkAnalysis vs Network Analyst _arcgis中将一个点图层中的某个点添加到closetst facility-优快云博客

本文链接：https://blog.youkuaiyun.com/gisspace/article/details/1839877

本文介绍了ArcGIS中两种网络模型——网络数据集模型和几何网络模型的区别，并解释了NetworkAnalysis库和NetworkAnalyst库的应用场景。前者用于支持定制化的网络追踪，适用于如河流等方向固定的网络；后者则提供了一组用于执行应用程序中的网络分析的对象。

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Network Analysis vs Network Analyst

the explain from the help of the EDN:

1.The NetworkAnalysis library provides objects for populating a geodatabase with network data and objects to analyze the network when it is loaded in the geodatabase. In addition, the library contains helper objects used for converting between the geometric network features and the logical network elements. Developers can utilize this library to support custom network tracing. The library is meant to work with utility networks such as gas lines, electricity supply lines, and so on.

2. The Network Analyst library provides objects for working with network datasets. These objects allow you to perform network analysis in your applications.

     before to understand the differentiate between the two library,we should first to understand the type of the Net int Arcgis.

      this lines come from the help of EDN :

Networks model the transportation of people and resources such as water, electricity, gas, and communications. Networks constrain flow to edges, such as streets and river reaches, which join at junctions such as intersections and confluences. The geodatabase has two core network models: the network dataset models transportation networks and the geometric network models directed-flow systems such as river networks and utility lines.

there are two type models in the geodatabase :one is Net datasets models and other is geometric network .

to know more about the material differentiates between them ,Pls read the help of EDN.

in my experiences,the the Net datasets models is the net that like the street,the object flow in the net can make their own decision . But in the Geometric network ,like the rivers .the water flowing in that can't the change the direction ,the net decided the way.

Now ,if you can understand the information above, the left is very easy to understand .

1、The Network Analysis library provide library for the Geometric network.
2、the Network analyst library provide library for the network dataset.

In addition :

   in the desktop system :you can find two types of tools in the ArcMap(ArcInfo),one is network analyst tool ,which provide tools the Network dataset. otherwise ,the utility network analyst tool ,which provide tools for the Uitilty network dataset.(which is geometical network.)