Re: [Jts-topo-suite-user] Geometry Precision

[Martin D. <mtn...@gm...>]

You can of course get the PrecisionModel from the GeometryFactory and check
its scale factor.  But this isn't enforced in any real way, and often
clients use full FLOATING precision anyway, even if the data does not
support this level of precision.

Checking precision is a bit complex and subtle.  You can't check the
numbers in the coordinates, because you can't tell if say 1 represents a
value with a single digit of precision or the much more exact value
1.0000000000000000...

If what you are really interested in is whether reducing the precision
might affect the topology of a geometry, then you might be able to use the
MinimumClearance algorithm.  This measures how close the two closest facets
in a geometry are (points or segments). In theory precision reduction below
this value should not affect the topology.  I'm not sure this is an exact
theory, however. If you try this post back to report how well this works.




On Sun, Nov 24, 2013 at 3:00 AM, Brian Sanjeewa Rupasinghe <
ji...@gm...> wrote:

> Hi,
>
> Before reducing precision of a geometry, is there any method to check the
> current precision of a Geometry?
>
>
>
>