[geotk] Geometry operations in Geotk

[Quentin Boileau]

Hi Jon,

JTS is an external library. You can find here
<http://www.vividsolutions.com/jts/JTSHome.htm> documentation and sources.
JTS is mostly used in Geotk feature module.

Best Regards,


2014-07-18 18:04 GMT+02:00 Jon Blower <j.d.blower at reading.ac.uk>:

> Hi Johann,
>
> Which Geotk module is the JTS class in? Is it in the Maven repository?
>
> Cheers,
> Jon
>
> --
> Dr Jon Blower,
> Technical Director, Reading e-Science Centre,
> MELODIES project coordinator,
> School of Mathematical and Physical Sciences,
> University of Reading
> Tel: +44 118 378 5213
> Email: j.d.blower at reading.ac.uk
>
> On 18 Jul 2014, at 16:31, johann sorel <johann.sorel at geomatys.com> wrote:
>
> > Hi Jon,
> >
> > We use JTS for geometries for now.
> >
> > > Here is an example to create geometries :
> >
> https://github.com/Geomatys/geotoolkit/blob/master/demos/geotk-demo-samples/src/main/java/org/geotoolkit/pending/demo/geometry/JTSDemo.java
> >
> > > All operations are on the JTS geometry class.
> > boolean intersect = geom1.intersects(geom2)
> >
> > > For reading and writing you have WKTReader and WKTWriter, same for WKB.
> > WKTReader reader = new WKTReader();
> > Geometry geom = reader.read("POLYGON(....");
> >
> > > For transformation between CRS.
> > Geometry geom2 = JTS.transform(geom, crs1ToCrs2);
> >
> >
> >
> > Johann Sorel
> > Geomatys
> >
> >
> >
> > On 18/07/2014 17:06, Jon Blower wrote:
> >> Hi all,
> >>
> >> I’d like to create simple geometries (mainly polygons) and detect for
> intersection, containment and other typical geometry operations. Which
> classes in Geotk should I look at? I found a large number of classes
> relating to geometries but was a bit confused about where to start.
> >>
> >> (I’d also like to be able to parse and generate WKT strings if this is
> possible.)
> >>
> >> Thanks,
> >> Jon
> >>
> >> --
> >> Dr Jon Blower,
> >> Technical Director, Reading e-Science Centre,
> >> MELODIES project coordinator,
> >> School of Mathematical and Physical Sciences,
> >> University of Reading
> >> Tel: +44 118 378 5213
> >> Email: j.d.blower at reading.ac.uk
> >>
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> >
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-- 
Quentin Boileau.
Java developer
Geomatys
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