[postgis-users] Buffering latlon features in meters
Gregor at HostGIS
gregor at hostgis.com
Thu Jan 22 17:15:44 PST 2009
Hey, all. I posted a Wiki page about buffering latlon features in
meters. It's old news that the trick is to reproject to a meters-based
SRS, but the selection of which SRS is up in the air.
I got some great advice from nhv on #postgis and we came up with a
solution that seems to work very well: make up your own SRS and know
it'll work. :)
This seems a lot better than picking a UTM for data that goes outside
the UTM's zone, or World Mercator, or a few other tricks I tried that
weren't so great.
Comments are welcome, especially if you can improve on our mechanism.
Gregor Mosheh / Greg Allensworth BS, A+, Network+, Security+, Server+
System Administrator, Lead Programmer
HostGIS development & hosting services, http://www.HostGIS.com/
"Remember that no one cares if you can back up,
only if you can restore." - AMANDA
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