Google Maps Marker Lasso Search Tool

Output

0 m²

0 km²

Options

[Map Height : Small - Medium - Large]

Description

This tool will show how google maps can be used to lasso an area on a map and then return markers that only exist within that area. This is only intended to be a proof of concept and not a tool as such.

How To Use

1. Click multiple time around the map to define an area
2. The markers in that area will then display
3. You can drag and drop markers after they have been put on the map

Options

Click Clear Map to start again.

Click Show All Markers to see al the markers on the map.

Click Delete Last Point to remove the last point that you clicked.

Click Find Markers to re-scan the map to find the lassoed markers again

Requirements

javascript enabled

How it Works

There are 100 random markers placed around the map when the page is first loaded, but not displayed. As you select an area using a polygon, markers that are found inside this area are then made visible.

Relevant Links

http://www.google.com/apis/maps/

Further Uses and Ideas

• This type of system could be used for example for estate agents to allow house finders to define an area within which they wish to search for property.

Version History

• Version 1 (03/05/2007) - Version 1
• Version 2 (22/02/2008) - You are here
  Added Draggable Markers
  Update search results on every event

Previous Comments For This Page

REALLY great work. Reminds me a bit of the short lived and infinitely useful Ask.Com Search-Enabled Drawing Tools, which were really fantastic, and I'm not sure why they disappeared. What would really make this useful is if the points were defined by a Google Maps business search.. and then spit out all the results within the defined area. Magazines/Newspapers could use it to pull contact information for every potential advertising client from a given industry within their range of circulation.
By Will on 22/07/2008 How about a box/rectangle draw selection instead of a zoom? See this: http://earthcode.com/blog/2006/07/gzoom.html he's zooming with his javascript, but what I need is to _select_ with a box. like selecting multiple files in windows for deletion! cept i wanna select multiple locations on a map and use them in a web form.
On 04/03/2008 Is there a place to look at your code? I am trying to find a way to ask the map for all the markers within a certain radius or a GLatLng.
By Rob on 29/01/2008