Use a custom map if you have data with a geographical component that doesn't match any of the standard maps provided by Analytics charts, such as custom regions. You can also use custom maps for areas that can be represented with polygons, such as stadium seat sections, city blocks, or floor plans.
Custom map charts can be used in lenses and dashboards. You can create and manage custom maps in explorer and dashboard designer.
Custom map charts in Analytics can be created from GeoJSON with a geometry type of Polygon or MultiPolygon. See the reference section for more information. Data is overlaid on a custom map using either an id or name property as a key. (Salesforce Help)
A Few Online Tools
Learn how to create custom maps to drive your data in different Geographies.
Learn how to create custom maps to drive your data in different Geographies.
Learn how to create custom maps to drive your data in different Geographies.
Custom map in Einstein Analytics with GeoJSON a blog by REINHARD
Sometimes you come into a situation where the maps provided in Einstein Analytics are not matching your requirements and you want to create your own map. Luckily you can upload your own GeoJSON files to use as maps in Einstein Analytics.
How to create the custom map using GeoJSON in Einstein Analytics by Gyan Adda
Plot your salesforce case records on Netherlands Township or Provinces custom Map in Einstein Analytics. Analytics has built-in map charts of various geographical areas. You can use them like any other chart to display a visualization of your data. But what if you can’t find the map you need for the data you have?. In this case Netherlands Township or Provinces Map. This is the article which will help you to create that map using GeoJSON definition file and use in Einstein Analytics.