I should clarify that I was testing with JTS 1.9; so if someone can tell
me how to use Prepaired Geometry we can see what kind of improvement
that makes?
The results are (for comparing 100 randomly generated little 2x2
squares arranged onto a 10x10 grid):
a) 230 mills geometry.disjoint( geometry2 ) || geometry.touches(
geometry2 )
b) 341 mills matrix.isDisjoint() || matrix.isTouches(2,2)
c) 441 mills geometry.relate( geometry2, "F********" )
My guess would be that the explicit relationship methods on the JTS
geometry objects are optimized and do not compute the full matrix; all
other options cost about the same as they are based on computing the
complete matrix and then asking questions about the result. I was
hoping the relate method would notice my pattern only cared about the
intersection of the interior ;-)
Thanks for everyones time,
Jody
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