Open WFS Table Dialog Box - MapInfo_Pro - 2023

MapInfo Pro provides a Web Feature Service (WFS) client to retrieve geospatial GML2 (Geography Markup Language version 2) data using HTTP GET and HTTP POST requests over the Internet or through a private intranet. The WFS client was developed in accordance with the 1.0.0 OpenGIS Web Feature Service Implementation Specification, which is available online: http://www.opengeospatial.org/standards/wfs

WFS is similar to WMS (Web Map Service), which allows a client to overlay map images from multiple services over the Internet or through a local intranet. But while a WMS server provides raster maps, and a WFS server provides raw coordinate data that the client uses to produce a map.

The Open WFS Table dialog box allows you to retrieve GML2 data.

WFS Server

Use this drop-down list to identify which WFS you would like to retrieve information from.

Servers

Use this button to access the WFS Servers list, set the default WFS server, and add, edit, or remove WFS server entries.

Server URL

This field displays the URL of the server you selected. It is not editable.

Details

Click this button to see technical details of the WFS server you selected in the WFS Servers drop-down list. Details include the URL entry, the Server name, the version of the WFS specification that it conforms to, and the abstract provided by the server, if available.

WFS Layers

Contains the WFS layers available from the WFS server you selected.

Column Filter

Click this button to display the Column Picker dialog box and select the column names of the highlighted layer to display.

Row Filter

Click this button to display the Row Picker dialog box and select the rows you want to fetch from the layer you highlighted. Select the column name, the operator, the value, and the conjunction information in the drop-down lists provided.

Max Features

To limit the number of features returned by the WFS server, select this check box and enter a number of features in the next field. By limiting the number of downloaded features, it may take less time to download and display a table than it would for downloading the entire table. This may allow you to quickly judge the value of the data. However, you cannot control which features are downloaded.

Paging

Select the Enable feature paging check-box to enable response paging. With this you can page through the results for any given WFS query.

Symbol Style

Use this button to select a symbol style for the data in this layer. This option may not be available for every WFS layer.

Line Style

Use this button to select a line style for the data in this layer. This option may not be available for every WFS layer.

Region Style

Use this button to select a region style for the data in this layer. This option may not be available for every WFS layer.

Coordinate System Projection

This field displays the native coordinate system information for this layer.

Projection

If you can change the projection for this layer, the Projection button enables and allows you to change the projection of the layer you selected. This button enables only when the projection provided by the WFS server cannot be properly interpreted by the WFS client.

Auto Update: Select to send an automatic request to fetch features based on the following scenarios:

• Fetch all features (If the Max Features check-box is unchecked):
  • With Zoom-In there will be no automatic request to fetch records.
  • With Zoom-Out until the last fetched MBR is within the existing MBR, no request will be sent. Once the new view MBR is outside the last fetched MBR, an automatic request will be sent to fetch more features.
  • While Panning an auto request will be sent to fetch record if new view MBR is outside the last fetched MBR.

• Fetch limited features (If the Max Features check-box is selected):
  • While Zoom-in, Zoom-out and Panning, an auto request will be sent to fetch features based on the new view MBR.