I have tested this in JTS 1.12, and can confirm that both isValid and
buffer work correctly. The buffer operation does take quite a while and
requires a significant amount of memory.
So the geometry is fine. There may be some issues with GEOS.
On 8/18/2011 3:44 PM, Christopher DeMars wrote:
Incidentally, this is one of those cases where buffering by unioning the
buffers of the components far outperforms the straight buffer (for
distance = 100, 10 s vs 70 s).
This is something you might be able to try, if your data model permits
it. Split the geometry into its components, and
