topic Re: WMS GetFeautureInfo - ArcGIS Maps SDK for Qt C++ in Qt Maps SDK Questions

WMS GetFeautureInfo - ArcGIS Maps SDK for Qt C++

Tsub4sa80 — Fri, 12 Apr 2024 20:35:13 GMT

Hi to all, I need to send a WMS GetFeatureInfo command to get information from a WMS server.

Which is the method that I need to call, using ArcGIS MAP QT SDK C++, to pack and send my request ?

I need also to add some custom parameters to request.

Thanks, in advance.

Re: WMS GetFeautureInfo - ArcGIS Maps SDK for Qt C++

MatveiStefarov — Mon, 15 Apr 2024 17:35:24 GMT

To call GetFeatureInfo command, you would use identifyLayerAsync(...) operation on the MapView. The steps are:

Create a WMSLayer with a URL.
Set the custom parameters. These will be sent with every GetMap and GetFeatureInfo request.
Add layer to your Map, load it, and display it in a MapView
Call identifyLayersAsync on the MapView -- this is often connected to mouseClicked signals to get the clicked position. This will issue a GetFeatureInfo request for the layer. Currently, the only supported info format is "text/html".
The completed future will have a IdentifyLayerResult containing a WMSFeature.

Use the "HTML" attribute on the WMSFeature to retrieve this information as returned by the service. The Geometry property is not implemented yet, and will always return null.

Re: WMS GetFeautureInfo - ArcGIS Maps SDK for Qt C++

Tsub4sa80 — Sun, 21 Apr 2024 12:56:59 GMT

Thank you for your reply @MatveiStefarov . I haven't tested your solution yet . I will try and provide a feedback asap.

Re: WMS GetFeautureInfo - ArcGIS Maps SDK for Qt C++

Tsub4sa80 — Thu, 25 Apr 2024 21:19:42 GMT

@MatveiStefarov I have implemented what you suggested, and as a response from the server, I got the following message: 'The request is for a service type not offered by the server' caused by a ServiceException.

I suppose that the problem is on the configuration of the custom parameters. I'm right?

If I need to send a request like this:

http://localhost:8080/?SERVICE=WMS&VERSION=1.3.0&REQUEST=GetFeatureInfo&LAYERS=ENC&QUERY_LAYERS=ENC&I=500&J=500&CRS=EPSG:4326&VIEWPORT=2.956,3.886,0,,10000&WIDTH=1920&HEIGHT=1200&Info_FORMAT=text/html

which kind of custom parameters I need to set?

Thank you in advance.