I'm thinking that if we're using dots to show the locations, then a larger color wheel (something that combines all the location colors and is distinctive) makes the obvious choice for symbolizing these "multi-location" markers.
If we sort the locations list by coords, we can efficiently determine if there's another location at the same coord (so we know when to use these multi-location markers).
The info-window for these markers should list all locations. Put a colored dot to the right of each location name since we don't have the marker to show ratings. Maybe skip the address to be more compact (we'd only need to show the address, once, though). We'll probably need to set a max-height to the info window and allow it to scroll, in case there's a ton of locations with the same coords (possible for malls).
I'm thinking that if we're using dots to show the locations, then a larger color wheel (something that combines all the location colors and is distinctive) makes the obvious choice for symbolizing these "multi-location" markers.
If we sort the locations list by coords, we can efficiently determine if there's another location at the same coord (so we know when to use these multi-location markers).
The info-window for these markers should list all locations. Put a colored dot to the right of each location name since we don't have the marker to show ratings. Maybe skip the address to be more compact (we'd only need to show the address, once, though). We'll probably need to set a max-height to the info window and allow it to scroll, in case there's a ton of locations with the same coords (possible for malls).