Set spatial reference

Specify a map’s spatial reference.

Use case

Choosing the correct spatial reference is important for ensuring accurate projection of data points to a map.

How to use the sample

Pan and zoom around the map. Observe how the map is displayed using the World Bonne spatial reference.

How it works

1. Instantiate a Map object using a spatial reference e.g. Map(spatialReference: SpatialReference(wkid: WKID(54024)).
2. Instantiate a Basemap object using an ArcGISMapImageLayer object.
3. Set the basemap to the map.
4. Set the map to a MapView object.

The ArcGIS map image layer will now use the spatial reference set to the map (World Bonne (WKID: 54024)) and not its default spatial reference.

Relevant API

• ArcGISMapImageLayer
• Basemap
• Map
• MapView
• SpatialReference

Additional information

Operational layers will automatically project to this spatial reference when possible.

Tags

project, WKID