GIS data is often available as digital maps that have been created in a GIS system. A map contains all the layers required for a specific project. Those maps can be referenced to an iModel and viewed in an iTwin viewer for adding contextual information. Existing maps are referenced via the Map Layers widget, three formats are supported:  WMS, WMTS and ArcGIS Map Service and Feature Service. Referenced maps are published as raster data and it is not presently possible to retrieve information from such layers. Development is underway to permit properties retrieval from such layers.

Chances are your GIS department already has existing maps available and ready to use in your project. Alternatively, you can use any GIS server (ArcGIS, open-source Map Service, GeoServer, etc.) to compose your map, add symbology and publish it to the format that best suits your needs. Contact your GIS Administrator for more information.

For more information about the support of Geospatial data, please refer to the Map Layers Widget wiki page.