With all the google map mashups being developed, I started thinking about a compelling interface to specify search areas on a map - especially on a mobile device. To date, I've seen zip codes used using google local, but this paradigm is limited if you are unfamiliar with the surrounding area.
Using the google map API, I've put together a javascript prototype (tested with Firefox) that shows how one might draw an enclosing polygon to extract information.
Still a work in progress, the application echos the descriptions of all the predefined points on the map that have been surrounded by the drawn enclosure. Using a PDA and stylus, these polygons could be drawn quite easily with a similar model.
One might envision a map (google maps/earth, etc) as a visual tool to select an area of interest. The coordinates, which specify the surrounding polygon, could be sent to various data sources, each one responsive to a unique search criteria. By using set operations (union, intersection, etc) with the polygon coordinates as common input, the user could extract useful information.
For example, borrowing from a dining example, I might be interested in "Sushi restaurants" (Zagat data server) in "Safe neighborhoods" (police beat server) accessible via "Public Transportation" (MTA server). I would probably expect the resulting result set to be plotted on a map.
Hey, just took a look at your code. It seems your script isn't working as is. I downloaded a copy and used my API key and it works nicely. Would you mind if I used some of this code for a project of mine?
Posted by: Abyss | June 19, 2006 at 03:45 PM