Contents
What does it mean to use WFS for editing?
A WFS enabled for editing is known as a transactional WFS, or WFS-T. Beyond the standard WFS operations such as GetFeature, WFS-T supports an additional operation called Transaction, and may also support operations for locking features to prevent concurrent edits.
How is WMS and editing vector data on the web different from WFS?
To standardize the process of sending vector data through web services, the Open Geospatial Consortium (OGC) has produced the Web Feature Service (WFS) specification. You’ve already seen a related service, the WMS in previous lessons. How is WMS different from WFS?
Which is an example of a WFS request?
These operations include GetCapabilities, DescribeFeatureType, and GetFeature. The GetFeature operation is the one that actually retrieves features. Below is an example GetFeatures WFS request for the US state of Colorado (I picked something with a simple geometry). I adapted this from the Boundless WFS tutorial
Can a WFS request draw a GeoJSON?
Although Leaflet won’t draw the GML responses sent by a WFS, it will draw GeoJSON; therefore, one pattern of working with WFS via Leaflet is to configure the server to send back GeoJSON instead of GML. You can then send WFS requests to the server via AJAX (asynchronous web requests) and use Leaflet classes to draw the geoJSON coming back.
What kind of markup language do you use for WFS?
A WFS returns data using Geography Markup Language (GML), a specification for expressing GIS data using XML. GML can contain both geometry and attribute information. Because it is based on XML and is designed to be flexible enough to handle many geographic feature types, GML is much more verbose (takes more text) than GeoJSON.
What’s the difference between a WMS and a WFS map?
WMS involves the server sending a single map image, whereas WFS involves the server sending vector data as text to be drawn by the client. In simple terms, a WMS map is drawn by the server and a WFS map is drawn by the client.
Can a GeoServer be used as a WFS server?
As shown in the above examples, GeoServer can expose your layers through WFS. This is enabled by default and requires no configuration on your part. Other FOSS GIS servers such as Map Server and Deegree support the creation of WFS web services.