GM5 Google Mapping Drawing Dynamic Circles Around Markers

When you place a marker on a map, you have control over the marker icon, bubble help, and info box text. You can also draw a circle around the marker, and you can control the color of the circle and the shading of the interior of the circle. The circle and its color can be used to convey information about the corresponding record in the Grid. The ability to draw a circle around the marker could be used to indicate the service area of a branch location, or it might be used to represent the relative price of a house in a real estate application. For example, for more expensive houses you might draw a larger circle around the marker on the map. In this video, which shows a Grid based on the sample airports database, we draw a circle around each marker on the map. The radius of the circle is proportional to the airport's elevation.