Take the 2-minute tour ×
Geographic Information Systems Stack Exchange is a question and answer site for cartographers, geographers and GIS professionals. It's 100% free, no registration required.

I am working on a local design project and need to determine if someone is local to my area to allow them to participate. Local, as defined by the group, means that the person is within 2 hr driving time based on Google maps to 32 Vassar St., Cambridge, MA.

While I can figure out how to get travel times from point to point, I cannot seem to figure out if there is a way to create a polygon that displays the region which we consider local.

Any ideas on how to do this using Google tools?

share|improve this question
    
That is an interesting problem, but would be time consuming and costly to determine every possible result. Why not create a buffer? –  CrazyEnigma Jul 23 '10 at 22:29

4 Answers 4

up vote 6 down vote accepted

Google's tools do not provide any way to do this kind of thing built in. While you might be able to do this by routing to a sufficient number of locations and checking the time, another tool that you might be interested in is Graphserver. GraphServer is a multimodal trip planner, which can take data from OpenStreetMap and other data sources. Some of the gallery images show growing shortest-path distance routing, and this is based on a similar metric.

The Google Group would be the appropriate place to discuss the possibilities of using this tool.

Note that this is not a pre-baked tool; it will likely require some investigation and work to get it to solve your problem, but the tool can be used to do it.

share|improve this answer
    
Thanks for the useful information. I figured that this was not possible, but it was worth asking to be sure. –  GuidoS Jul 26 '10 at 3:23

Take a look at the Mapnificent API.

Mapnificent provides dynamic public transport travel time maps for many cities in the US and some world wide. You can use the Mapnificent API to augment your Google Maps application with public transport travel time overlays.overlays.

Take a look at London here. alt text

share|improve this answer
    
It looks like your answer is applicable to this question as well! gis.stackexchange.com/q/216/751 –  Andy W Oct 31 '10 at 2:01
    
Thanks for addding the comment on that post. –  Simon Oct 31 '10 at 3:01
    
ooh that is cool... will have to look into that –  GuidoS Apr 5 '11 at 17:07

Here's something that might work: http://www.freemaptools.com/how-far-can-i-travel.htm

share|improve this answer
    
Anyone has any idea what libraries / tools they used to implement their system? –  ejel Feb 25 '11 at 16:33

ESRI has published a geoprocessing sample server that produces "Drive time polygons".

It's got Cambridge MA roads, so you could probably take this:

http://resources.esri.com/help/9.3/arcgisserver/apis/javascript/gmaps/samples/geoprocessor/gp_servicearea.html

And mash it into what you need.

share|improve this answer

Your Answer

 
discard

By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.