The Google Map Chart displays a map using the Google Maps API.
Data values are displayed as markers on the map.
Data values can be coordinates (latitude-longitude pairs) or addresses.
The map will be scaled so that it includes all the identified points.
If you want your maps to be line drawings rather than satellite imagery, use a geochart instead.
You can identify the places to put markers by name, as shown below in this map of the top ten countries by population:
You can also specify locations by latitude and longitude, which loads faster than named locations:
You can use marker shapes located elsewhere on the web.
Here's an example using green push-pins from iconarchive.com: