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Announcements and News >> Light Pollution

jshine
member


Reged: 07/26/07
Posts: 57
Loc: Rochester, MN, USA
Re: Google Maps meets Light Pollution
      05/20/08 01:35 PM

Quote:

Very nice I did something like this for the UK last year but it didnt really work out very well. I had problems with overlaying the images so they would be over the correct parts of the country. I thought it may have been a projection issue as I think I was using a satelite image.

Like this
http://www.roe.ac.uk/roe/support/pr/pressreleases/070117-darkskylaunch/darksky01.jpg

Did you encounter simmilar problems with your implementation?

Alex




I was extremely lucky in the sense that the map I downloaded (from an Italian research team) had the same projection as the map that Google uses. In your case (and bear in mind that I'm not a cartographer either), you could try applying a 2-D transformation matrix:

http://en.wikipedia.org/wiki/Transformation_matrix#Examples_in_2D_graphics

This would be easily accomplished in Matlab (expensive, but commonly found in universities). I'm not sure it would work -- I'd have to read more about the particulars of the projections in question -- but my intuition says it should.

Since the team that I downloaded my image from also has maps for Europe, Asia, S. America, etc., I would like to extend my site's functionality to those areas as well. ...but with all the projects that I have to work on as part of my degree, I don't have time to make those modifications.

-Jon

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Entire thread
Subject Posted by Posted on
* Google Maps meets Light Pollution jshine 05/19/08 10:17 PM
. * Re: Google Maps meets Light Pollution STiMULi   01/06/09 10:31 PM
. * Re: Google Maps meets Light Pollution IngramDW   08/25/08 12:48 PM
. * Re: Google Maps meets Light Pollution NyxAither   08/25/08 05:45 PM
. * Re: Google Maps meets Light Pollution Startraffic   10/21/08 01:08 PM
. * Re: Google Maps meets Light Pollution Brooklyn   08/05/08 12:32 PM
. * Re: Google Maps meets Light Pollution WNCAGC   08/05/08 01:10 PM
. * Re: Google Maps meets Light Pollution JakeT93   06/29/08 09:41 PM
. * Re: Google Maps meets Light Pollution Tony Flanders   06/30/08 06:22 AM
. * Re: Google Maps meets Light Pollution mccambjd   12/16/08 01:59 PM
. * Re: Google Maps meets Light Pollution Octavarium   08/05/08 05:38 PM
. * Re: Google Maps meets Light Pollution o1d_dude   06/30/08 02:01 PM
. * Re: Google Maps meets Light Pollution Ptarmigan   10/30/08 12:30 PM
. * Re: Google Maps meets Light Pollution veebs2   05/20/08 11:01 AM
. * Re: Google Maps meets Light Pollution csa/montanaModerator   05/20/08 09:12 AM
. * Re: Google Maps meets Light Pollution Tony Flanders   05/20/08 06:17 AM
. * Re: Google Maps meets Light Pollution jshine   05/20/08 11:08 AM
. * Re: Google Maps meets Light Pollution Tony Flanders   05/20/08 02:28 PM
. * Re: Google Maps meets Light Pollution jshine   05/20/08 02:41 PM
. * Re: Google Maps meets Light Pollution Sirius76   05/20/08 04:13 PM
. * Re: Google Maps meets Light Pollution Tony Flanders   05/20/08 03:53 PM
. * Re: Google Maps meets Light Pollution jshine   05/20/08 08:11 PM
. * Re: Google Maps meets Light Pollution Elektronkind   05/23/08 04:00 PM
. * Re: Google Maps meets Light Pollution jshine   05/23/08 08:22 PM
. * Re: Google Maps meets Light Pollution purpleseeker   06/18/08 06:46 PM
. * Re: Google Maps meets Light Pollution TrippinReason   06/20/08 01:06 PM
. * Re: Google Maps meets Light Pollution AleX`G   05/20/08 11:59 AM
. * Re: Google Maps meets Light Pollution jshine   05/20/08 01:35 PM
. * Re: Google Maps meets Light Pollution jshine   05/20/08 11:07 AM
. * Re: Google Maps meets Light Pollution csa/montanaModerator   05/20/08 09:10 AM

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