Re: GIS data

[Yoann Pigné <yoann.pigne AT gmail.com>]

Hi,

The best cartographic projections library I know so far is the Proj.4 
project. You will be able to do projections of latitude longitude coordinates 
using tens of projections methods.

Dealing with GraphStream, indeed it does need cartesian units to run. 
Latitudes and longitudes won't work, but once projected with the method of 
your choice and the unit of your choice (m, km, mi, yd, ...), then it will 
work. 

There is no projection facility directly implemented in GraphStream, you will 
have to use the native (C/C++) Proj.4 library.  I am also aware of a java 
portage called Proj4J but it's still under development. 

regards,

Yoann

On Oct 25, 2011, at 4:15 PM, Keith Thompson wrote:

> Can anyone suggest to me a method for translating latitude, longitude 
> coordinates to x,y coordinates for GraphStream?  Should I use mileage as a 
> measure?  Are there any particular classes/methods I should be looking at?
> 
> Regards,
> 
> Keith Thompson