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 (lat-long pairs) or addresses. The map will be scaled so that it includes all the identified points.
Customizing Markers
You can use marker shapes located elsewhere on the web. Here’s an example using blue pins from iconarchive.com:
var options = {
icons: {
default: {
normal: 'https://icons.iconarchive.com/icons/icons-land/vista-map-markers/48/Map-Marker-Ball-Azure-icon.png',
selected: 'https://icons.iconarchive.com/icons/icons-land/vista-map-markers/48/Map-Marker-Ball-Right-Azure-icon.png'
}
}
};