Creating custom Marker Icons using remote image files
Edit Marker Properties
You can use remote image icons instead of bubbles when plotting points on a map by modifying the expression for the “Marker Icon” in the “Marker Properties” section. For example:
=if([Venue Type] = 'Bar/Restaurant', 'http://www.<example>.com/images/restaurant.png',
if([Venue Type] = 'Hotel/Convention Center', 'http://www.<example>.com/images/hotel.jpg',
if([Venue Type] = 'Sports Arena/Catering', 'http://www.<example>.com/images/football.jpg',
'http://www.<example>.com/images/question_mark.jpg')))