[geotk] Geometry operations in Geotk

Jon Blower j.d.blower at reading.ac.uk
Fri Jul 18 11:12:47 PDT 2014


Hi Johann,

This doesn’t seem to be on Maven Central (http://search.maven.org/#browse|1129291095). Is there a specific repository? I couldn’t find one on the Geotk website.

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 17:10, johann sorel <johann.sorel at geomatys.com> wrote:

> It's on maven :
> 
> groupId : org.geotoolkit
> artifactId : geotk-geometry
> 
> Johann Sorel
> Geomatys
> 
> 
> On 18/07/2014 18:04, Jon Blower wrote:
>> 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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