I'm trying to find a way to accurately (or at least semi-accurately) compute a
geodetic (i.e. WGS84/spheroidal) buffer around any given geometry anywhere on
the planet.
I've come across the tutorials and postings like
http://docs.geotools.org/latest/userguide/library/jts/operation.html,
http://gis.stackexchange.com/questions/33509/geotools-buffer-using-different-crs,
and
http://osgeo-org.1560.x6.nabble.com/Creating-a-buffer-around-a-point-td4323303.html.
First problem is that they seem to hard-code a given CRS to supplement WGS84
for the MathTransform; I'm unclear on how to find the right/best CRS if I'm not
limited to, say, Belgium (Lambert 72).
More importantly, though, I'm not even convinced the approach provided in these
examples is entirely sound, since it still utilizes JTS buffer algorithms
under-the-hood, which are computed on a 2D Cartesian plane. So, although you
might be converting to/from meters and then reprojecting, the JTS operation
itself will be applying a fixed distance (in decimal degree units) for the
buffering operations, which is obviously wrong.
Any tips/ideas?
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