JTS does provided a Precision object you can use with a Gometry factory to
explicitly control precision. That combined with simplify geometry operations
should give you the control you need?
Note we also make use of "decimation" to skip over points that would otherwise
render into the same pixel; perhaps that code could be a useful example for you?
While there is a page in the user guide
(http://docs.geotools.org/latest/userguide/library/jts/simplify.html) I could
really use a code example if you can produce one :-)
--
Jody Garnett
On Tuesday, 24 May 2011 at 10:47 AM, Jason Ferguson wrote:
> I am attempting to store data from the TIGER/Line shapefiles into a
> database table, but am having issues with reducing the precision from
> the 5 decimal places to 3 decimal places.
>
> What I find is that after I dig down and get the coordinates, then
> eliminate duplicates, I'm left with a list of coordinates something
> like this (which I call semi-duplicates for lack of a better term):
>
> 45.900, 178.353
> 45.900, 178.355
> 45.900, 178.361
> 45.900, 178.363
>
> I end up with the same latitude, but several intermediate longitudes
> (or vice versa). I don't need all of these intermediate points, but I
> realize that this is an artifact of brute force rounding.
>
> Is there a "better" way to reduce the decimal precision?
>
> Jason
>
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