Overpass turbo

It acts as a database over the web: the client sends a query to the API and gets back the data set that corresponds to the query, overpass turbo.

Overpass Turbo is a website to execute requests towards Overpass API and to watch the result on a map. Martin Raifer has developed Overpass Turbo, and I'm grateful to him both for the idea and the software. Very large result sets cause difficulties; the JavaScript engines even of contemporary browsers then get strained in their memory management. For this reason, Overpass Turbo will ask you if it has received a large set of results if you accept the risk to freeze your browser by the amount of data. There are many popular and helpful features in Overpass Turbo, but they exceed the mission of this manual. Instead, the proper documentation of Overpass Turbo introduces them. Features not introduced here include e.

Overpass turbo

Objects in the database are made up of single nodes, ways which are a series of single nodes joined together , and relations which are more complex structures where ways and nodes are combined. Tags are used to label these data points by describing the features each one possesses. In this post we will see how to build different types of query to find information via the Overpass Turbo website. Overpass Turbo comes with a built in Query Wizard that makes constructing queries easier. The queries are converted into the more complex Overpass Query language before being sent to the API. To set the bounding box i. Tags come as a key-value pair. Literally everything with the tag key railway has been returned. Railway stations, bridges, crossings, platforms, signal boxes and other features have all shown up on the map. Running the query again gives a slightly different result. The display in the bottom corner of the map says that within the map area there are nodes and ways that match this query.

More information about overpass turbo is found in the OSM wiki.

This is a collection of queries that provides a simple tutorial that introduces the core features and syntax of the Overpass QL query language. Each of the queries introduces a specific feature of the language, starting from querying for simple points of interest through to more complex spatial queries. Each query introduces a specific feature of the language, with subsequent queries showing variations of how to use that feature. Or how to combine it with other features to do more complex queries. Read the descriptions and then review the query. Comments are included to describe the important elements of the query. Your browser will open up a new page, loading the query and the description into the Overpass Turbo IDE.

The Overpass "Query Wizard" helps you do this more easily. To get information from a database you send it a "query" a question in a language the computer can understand the "query language". Writing Overpass queries requires knowledge of the Overpass query language , and even then can sometimes be quite tedious, repetitive work. Overpass turbo 's Query Wizard helps you by converting simple, human readable search terms into functional Overpass queries. Those can be combined with logical operations like and or or.

Overpass turbo

This is a collection of queries that provides a simple tutorial that introduces the core features and syntax of the Overpass QL query language. Each of the queries introduces a specific feature of the language, starting from querying for simple points of interest through to more complex spatial queries. Each query introduces a specific feature of the language, with subsequent queries showing variations of how to use that feature. Or how to combine it with other features to do more complex queries.

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And how can OpenStreetMap empower local communities to build and maintain their own maps? It shows me every police station in the map box, which includes the areas outside London. It then restricts the result to data that has been last touched by the provided user:. View license. There are several community sites providing help for Overpass API and overpass turbo related questions. In the mobile version the text field sits above the slippy map. The following examples introduce the remaining commands recurse and around. The documentation of Overpass Turbo already explains the colours. Very large result sets cause difficulties; the JavaScript engines even of contemporary browsers then get strained in their memory management. Overpass Turbo is a website to execute requests towards Overpass API and to watch the result on a map. A turbo introduction to Overpass. Choose the user name for example, mine :. One can use handy shortcuts in the query which are auto-expanded before the execution of the query:.

In this guide you'll learn how to use Overpass Turbo to query OpenStreetMap data and extract specific features in a given area. You'll be exporting ski lifts and trails at Mount Bachelor , a popular ski resort in central Oregon.

In the mobile version the text field sits above the slippy map. This can mean that sometimes after a query is loaded and run in the editor, you might be looking at the wrong map location. Each of the queries introduces a specific feature of the language, starting from querying for simple points of interest through to more complex spatial queries. Views Read View source View history. Missing features may have been implemented in the meantime, and workarounds may have been streamlined. There are some settings for customizing turbo. You can also chain queries to get only nodes satisfying a second criterion that are located near nodes matching the first criterion. Overpass turbo also comes with a preloaded set of templates , which can be used instead of share-links for simple use cases like a simple key-value search. A turbo introduction to Overpass. More information about overpass turbo is found in the OSM wiki. Tags are used to label these data points by describing the features each one possesses. In all these cases, relations are involved :.