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WFS Properties

Use this dialog to connect to and configure a WFS layer.

Where to Find the Dialog

Select the WFS layer in the vertical list, right-click, and choose Properties...

About WFS Services

Gemini Terrain can connect to services that support the WFS protocol (Web Feature Service). WFS is an international standard for exchanging vector data over the internet. Unlike WMS, which delivers pre-rendered images, WFS delivers raw data in GML or JSON format, allowing you to click on objects and view property values.

Server

Enter the connection information for the WFS service.

Field Description
Server URL to the WFS service. Example: https://wfs.geonorge.no/skwms1/wfs.matrikkelen-eiendomskart-teig
Username Username for services that require authentication. Leave blank for open services.
Password Password for services that require authentication. Leave blank for open services.
Timeout Maximum wait time in seconds before the connection attempt is aborted.
Version WFS version used against the service. Default is 2.0.0. Select a lower version if the service does not support 2.0.0.

Click Fetch to retrieve available layers and metadata from the service.

WFS Settings

After clicking Fetch, the settings below are populated based on the service's GetCapabilities response.

Layer

Select which layer (feature type) from the service you want to use.

Properties

You can control which property fields are retrieved from the service.

  • The Properties list on the right shows all available fields for the selected layer.
  • The Selected properties list on the left shows the fields that will be retrieved. By default, all fields are retrieved.

Use the buttons to customise the selection:

Button Function
<< Add Move selected fields from Properties to Selected properties.
Remove >> Remove selected fields from Selected properties so they are not retrieved.
Up / Down Change the order of fields in Selected properties.

Note

Limiting the number of properties retrieved can improve performance against large services.

Max. Count

Maximum number of objects retrieved in one request. Default is 1000. Increase the value for large datasets, but be aware that high values may result in long load times.

Enable JSON

Check this option to retrieve data in GeoJSON format instead of GML. JSON may provide faster parsing for some services.

Coordinate System Information

Field Description
Source The coordinate system the service delivers data in (retrieved automatically from the service).
Target The coordinate system the data is transformed to in Gemini Terrain. Set automatically from the project's coordinate system, e.g. ETRS89 / UTM zone 32N.

Gemini Terrain automatically transforms coordinates from the source coordinate system to the target coordinate system.

Procedure

Procedure

  1. Enter the URL to the WFS service in the Server field.
  2. Enter Username and Password if the service requires authentication.
  3. Select the desired Version (default 2.0.0 works for most services).
  4. Click Fetch to retrieve available layers from the service.
  5. Select the desired layer in the Layer drop-down list.
  6. Optionally adjust which property fields are retrieved using the Properties lists.
  7. Adjust Max. Count if needed.
  8. Click OK to save the settings.