In addition to Weibo, there is also WeChat
Please pay attention
WeChat public account
Shulou
2025-04-05 Update From: SLTechnology News&Howtos shulou NAV: SLTechnology News&Howtos > Internet Technology >
Share
Shulou(Shulou.com)06/01 Report--
This article mainly introduces how to use pgRouting in GIS development, which is very detailed and has certain reference value. Friends who are interested must finish it!
PgRouting is an open source shortest path algorithm calculation class library, which is developed based on postgresql and postgis. Through the way of database, the imported data can be analyzed by the shortest path, and the results can be returned by using SQL statements. On the basis of the database, it has quite fast calculation efficiency.
Official website:
Http://pgrouting.org/
Integrate a variety of shortest path algorithms:
Follow postgresql before use, install the corresponding versions of postgis and pgRouting, and then use it.
For the use of the shortest path, the most time-consuming thing in the early stage is to make the data well, import the spatial road network data into the postgresql database, and add the relevant attribute data in the road network, such as road direction, distance length, time, etc., according to the help document of pgRouting. In generating the corresponding topological relationship, there are corresponding sql statements in these operations. After the data is completed, The above algorithms can be used to analyze the shortest path.
Compared with the shortest path analysis in arcgis, we also use arcmap and other tools to establish the topological relationship of the road network, and then calculate the data of the shortest path according to the incoming starting point and end point.
These are all the contents of the article "how to use pgRouting in GIS Development". Thank you for reading! Hope to share the content to help you, more related knowledge, welcome to follow the industry information channel!
Welcome to subscribe "Shulou Technology Information " to get latest news, interesting things and hot topics in the IT industry, and controls the hottest and latest Internet news, technology news and IT industry trends.
Views: 0
*The comments in the above article only represent the author's personal views and do not represent the views and positions of this website. If you have more insights, please feel free to contribute and share.
Continue with the installation of the previous hadoop.First, install zookooper1. Decompress zookoope
"Every 5-10 years, there's a rare product, a really special, very unusual product that's the most un
© 2024 shulou.com SLNews company. All rights reserved.