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ekt
2006 Apr 06
1
rounding of voronoi vertices using deldir()
...o put together a procedure which works
relatively well, but is somewhat inefficient. Someone on the PostGIS
list pointed me to the deldir() function in R, for which I can export a
text file with x/y coordinates from a PostGIS table, and write an SQL
script with insert statements containing PostGIS ewkt-compatible
geometries representing the voronoi polygons generated by deldir().
The script I'm using is below. I've added a very small frac parameter
to ensure none of the points are dropped from my dataset (which was
actually happening for me with some fairly dispersed clusters of
points)...