SPATIAL DATA STUDIO LTOM.02.011INTEROPERABILTYEXERCISE: OGC SERVICES IN GIS

Alexander Kmoch

EXERCISE: USE OGC SERVICES FROM GIS TOOLS

• Consuming OpenGIS Web Services in different desktop clients: QGIS and ArcMap

EXERCISE: OGC SERVICES IN DESKTOP CLIENTS

OpenGIS Specifications Instances

OpenGIS Web Map Tile Service 1.0.0

(WMTS)

Austria Basemap published here: http://basemap.at/

OpenGIS Web Map Service (WMS) OSM Map Server

http://osm.omniscale.net/proxy/service

Software:

Esri ArcMap with Data Interoperability Extension

And/or QGIS; you can find the software here: http://www.qgis.org/en/site/

http://www.qgis.org/en/site/

EXERCISE: OGC SERVICES IN DESKTOP CLIENTS

Go to http://basemap.at/ and click on the WMTS Schnittstelle (GetCapabilities) or copy the

following WMTS GetCapabilities request:

GetCapabilities: http://maps.wien.gv.at/basemap/1.0.0/WMTSCapabilities.xml

Add the web service in the ArcMap

application

Open ArcMap application, select

Add Data and then select Add

WMTS Server

http://basemap.at/http://maps.wien.gv.at/basemap/1.0.0/WMTSCapabilities.xml

EXERCISE: OGC SERVICES IN DESKTOP CLIENTS

Copy and Paste the above presented WMTS GetCapabilities Request,

click GetLayer and then click OK

EXERCISE: OGC SERVICES IN DESKTOP CLIENTSSelect the web service and add it to your ArcMap project! The added

basemap is now displayed in your ArcMap project!

EXERCISE: OGC SERVICES IN DESKTOP CLIENTS

EXERCISE: OGC SERVICES IN DESKTOP CLIENTSOpen QGIS and then click the Add WMS/WMTS Layer tab,

EXERCISE: OGC SERVICES IN DESKTOP CLIENTS

On the Add Layers from a Server, click New and then give a

name to the service (e.g. Basemap Austria) and then paste the web

service URL

EXERCISE: OGC SERVICES IN DESKTOP CLIENTSThen select Connect, click on the added Layer and then click Add

button. The basemap should be displayed now in QGIS client

EXERCISE: OGC SERVICES IN DESKTOP CLIENTS

Try yourself:

Please select one of the WMS servers available on this site:

http://wiki.openstreetmap.org/wiki/WMS and do the following tasks:

Change the Coordinate reference system

Change the output of the map

Set the Tile size to 200 by 200

References:

OpenStreetMap.org list of WMS Server:

http://wiki.openstreetmap.org/wiki/WMS

http://wiki.openstreetmap.org/wiki/WMShttp://wiki.openstreetmap.org/wiki/WMS

EXERCISE: OGC SERVICES IN DESKTOP CLIENTS

Try yourself:

1. Please send WFS GetCapability request to the following WFS server:

http://nsidc.org/cgi-bin/atlas_north?

GetCapabilities Request:

http://nsidc.org/cgi-bin/atlas_north?service=WFS&request=GetCapabilities

2. In the returned GetCapabilities document, please have a look at the published Feature Types.

How many feature types are published as WFS service?

3. try to understand the meaning of these attributes. Some names are quite intuitive, whereas

others a less meaningful, and add a WFS layer to the Desktop GIS

http://nsidc.org/cgi-bin/atlas_north?service=WCS&request=GetCapabilities&version=1.1.1http://nsidc.org/cgi-bin/atlas_north?service=WFS&request=GetCapabilities