[EAS] Open source GIS

[Ed Czarnecki]

Yes polygons occur as a series of lat,long pairs.  Example below (up in
Canada, FWIW):

<polygon>
45.7165,-64.4894 45.4771,-64.9179 45.4802,-64.9184 45.5945,-64.9346
45.597,-64.935 45.6408,-64.9413 45.6413,-64.9413 45.6986,-64.9495
45.6989,-64.9496 45.698,-64.9528 45.6736,-65.0429 45.649,-65.1331
45.649,-65.1332 45.6489,-65.1335 46.0832,-65.3336 46.0835,-65.3338
46.2515,-65.4015 46.2517,-65.4016 46.2517,-65.4014 46.2696,-64.9389
46.2709,-64.9062 46.2712,-64.8997 46.2712,-64.8997 46.2831,-64.5761
46.2834,-64.5691 46.2865,-64.4795 46.193,-63.8076 46.106,-63.7366
46.0357,-63.8518 46.0031,-64.0164 46.0015,-64.0246 45.9983,-64.0402
45.998,-64.042 45.9962,-64.0508 45.9936,-64.0512 45.9928,-64.0513
45.9689,-64.055 45.9767,-64.1484 45.9373,-64.1809 45.9373,-64.1809
45.9111,-64.2024 45.9095,-64.204 45.8817,-64.2312 45.8384,-64.2734
45.833,-64.2786 45.833,-64.2787 45.8247,-64.2867 45.8312,-64.3108
45.8389,-64.3392 45.7165,-64.4894
</polygon>

-----Original Message-----
From: EAS [mailto:eas-bounces at radiolists.net] On Behalf Of Mike McCarthy

As I recall, polygons use GIS coordinates data which then compares against
county GIS boundaries on record to define which counties are included in a
given product.

MM