I want to create an interactive map where users can go to the website, click on a polygon in the map, and have a chioce of three options. When they click one, it will change the color and update the attribute.
I want to have a split screen showing images from Google Earth (the image would be the same location but a different time period) and a outline of polygons overlaid on it. The user would ideally click the polygon and have a choice of red, yellow, or green pop up. They would then chose the color, and in the background the attribute for that polygon will change.
How would I go about doing this? I am new to web mapping.Thanks.