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    <h2>You asked for more control over appearance</h2> <p>Check out the <a href="http://geocommons.com/tour" rel="nofollow">Geocommons</a> <a href="http://geocommons.com/help/Javascript_API" rel="nofollow">JS api</a>, which may be more suited to your purpose than Google Maps.</p> <p>If you're going for flexibility, <a href="http://trac.osgeo.org/geos/" rel="nofollow">GEOS</a> would be preferable to drawing the shape for a specific projection. <a href="http://osgeo-org.1803224.n2.nabble.com/PHP-binding-ready-td5217024.html" rel="nofollow">I know there are php bindings</a>, but I haven't used them myself.</p> <p>Helmer Aslaksen has a great writeup about <a href="http://www.math.nus.edu.sg/aslaksen/gem-projects/hm/0304-1-66-sun_and_architecture.pdf" rel="nofollow">heavenly mathematics</a> that should help you create an alorithm to draw a sunlit-area polygon using geos. You can test your code against <a href="http://aa.usno.navy.mil/data/docs/RS_OneYear.php" rel="nofollow">measured sunrise/sunset times</a> for accuracy.</p> <h2>Edit 1</h2> <p>Must be Python and Google Maps, you say?</p> <ul> <li>You can <a href="http://code.google.com/apis/kml/documentation/" rel="nofollow">overlay data with KML</a>,</li> <li>which will allow you to <a href="http://code.google.com/apis/kml/documentation/kmlreference.html#bgcolor" rel="nofollow">set a background color</a> as you request.</li> <li>I like using the <a href="http://kml-samples.googlecode.com/svn/trunk/interactive/index.html" rel="nofollow">interactive sampler</a> to get a feel for how things will look.</li> <li>Check out the <a href="http://pypi.python.org/pypi/Shapely" rel="nofollow">Shapely package on pypi</a>,</li> <li>and a <a href="http://lists.gispython.org/pipermail/community/2009-April/002036.html" rel="nofollow">discussion</a> on how to create kml from it.</li> </ul>
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    1. POCalculating an overlay of day/night for Google Maps
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    1. USAlec Wenzowski
    1. USAlec Wenzowski
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    1. COThanks! I am stuck for this project with Google Maps, JS and Python unfortunately although your links look useful. I find it so hard to believe there is not a Google Maps overlay out there for this... seems so practical.
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