ogr2ogr can convert KML to Shapfile (and many other formats).  Here's a
list of all the supported formats...

http://www.gdal.org/ogr/ogr_formats.html

The command line is something like...

ogr2ogr -f "ESRI Shapefile" output.shp input.kml

This is the python wrapper for the polygonize functionality...

http://svn.osgeo.org/gdal/trunk/gdal/swig/python/scripts/gdal_polygonize.py

It comes packaged with the RPMs in EPEL, if RHEL or CentOS is your
thing.


-Kristian


On Mon, 2010-10-11 at 10:09 -0600, Randy Cosby wrote:
> Thanks Brian, Kristian,
> 
> I'll have to check out Splat! some time soon.  My process involved 
> converting the Radiomobile overlay into a raster (svg) in Inkscape, then 
> convert that to KML.  I can't remember off the top of my head how I did 
> it, but I was able to preserve the gps coordinates of the shape through 
> the conversions.  My primary need was to create interactive Google maps 
> (ie: your home can be served by ap1, ap3 and ap4, with ap1 being the 
> closest).  There are a number of apps for converting from KML shapes to 
> .shp files, just haven't had a chance to experiment with them yet.
> 
> * Inkscape: http://inkscape.org/
> * KML2SVG: http://kml2svg.free.fr/index3.php
> 



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