2013 Release: User Guide of GMap Editor V2
Discuss everything about gMap Builder and interactive maps in our support forum.

A Heat Map Example created by iMapBuilder Online - Google Map Editor
You will need select to draw a geographical area polygon overlay first,
(major locations are available now and more are coming soon.)

Create a polygon overlay for continents / countries / states / counties first
Heat Map can be presented using Continuous Color or Discrete Range Color.
You may further adjust settings on "stroke and fill opacity" tab.

Insert data, or import data from Excel, to generate a heat map online
You may import data from Excel file or CSV Text File for bulk data,
we offer sample datafile for reference.

Import data from Excel file or CSV Text file for heat map usage