Change spatial reference of map

MatejVrtich

In JSAPI v3.x it's not possible to change spatial reference of a map which has been already initialized (as a workaround we used to create a new map, set extent with the required spatial reference and copy all layers from the original map to the new one).

We do this because we need to support switching basemaps with different coordinate systems in the same app.

Is it possible to change spatial reference of a map in JSAPI v4.0?

KristianEkenes

Yes. We plan on supporting the ability to switch the Map's spatial reference in 4.0. It's not there yet, but it will be explored.

As of now, it looks like this will only be possible with Maps that have NO basemap. The SpatialReference of the map and all of the dynamic layers and FeatureLayers would reproject after changing the SpatialReference directly on the Map.spatialReference property.

map.spatialReference = new SpatialReference( {wkid: 4326} );  //or some other spatial reference object