Where can I specify the standard coordinate system of a Web Map

Question

I am using the coordinate widget in a Web AppBuilder application. The documentation says that in order to have a mouse over coordinate display, the standard coordinate system of the application has to match the selection in the coordinate widget (Coordinate widget—Web AppBuilder for ArcGIS | Documentation ).

I want the standard coordinate system to be EPSG:2056 CH1903+ / LV95 and coordinates should be shown on mouse movement on the map.

Where can I specify the coordinate system of the Web App to make this work?

RobertScheitlin__GISP · Answer

https://www.esri.com/arcgis-blog/products/arcgis-online/uncategorized/using-custom-basemaps/

MarioNowak · Answer

Ok, thank you – how can I create a custom base map?

RobertScheitlin__GISP · Answer

Mario,

What that means is that the basemap that you are using must be a custom basemap of yours that is in EPSG:2056 inorder for the coordinate widget to display on mouse move. You can NOT have a standard esri basemap which is WKID 102100.