OGC GML Document

Location: Overlay Types dialog > OGC > OGC GML Document

Selecting OGC GML Document will display the following Source URL dialog:

Open from a file on the local machine, or local area network

Select this option to choose a file on the local disk, or local area network.

Select the required Connection Type (see below).

Click Next.

The File Browser dialog is displayed to enable you to navigate to and select a file of type *.gml, *.gz or *.xml and click Finish on the File Browser dialog.

Open from URL

Select this option to choose a URL to a file, e.g. on the Internet.

The Configure button will now become active.

Enter the URL or select from the list of recently used URLs, if present.

Carry out URL Configuration as described below and return to the Source URL dialog.

Select the required Connection Type (see below).

Click Finish on the Source URL dialog.

Connection Type

Local cache - select this option if SIS is to download the data to local temporary storage. If the resulting Overlay is saved in an SWD, then SIS will re-query the data and re-cache the result, each time that the SWD is opened.

One-off import - select this option if SIS is to make a one-off copy of the data, that is completely disconnected from the data source.

Configuration - applicable when the Open from URL selection is made.

Click the Configure button if you want to configure how the selected URL is handled. The configuration data is stored in the SWD.

The Configure OGC GML Dataset dialog will be displayed:

XML parser configuration

Validate GML document - Validates the XML returned.

GML schema preload configuration

Select Do not preload a GML schema or select the required version of schema to preload.

If you select Preload custom GML application schema, the Browse... button will become active to enable the associated schema file to be targeted:

Axes order configuration

The GML 3.x specifications require that coordinate pairs are ordered (e.g. lat/lon or lon/lat) according to the axes order of the GML feature's coordinate reference system. Select between the following options when the GML version or the CRS axes cannot be detected.

• Detect automatically whether axes need to be swapped
  
• Do not swap axes
  
• Do swap axes

Click OK to return to the Source URL dialog.

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