Re: [Geotools-gt2-users] calculate distance between two multipolygons

[sunish <sun...@gm...>]

http://www.vividsolutions.com/jts/javadoc/com/vividsolutions/jts/operation/distance/DistanceOp.html#closestPoints%28com.vividsolutions.jts.geom.Geometry,%20com.vividsolutions.jts.geom.Geometry%29

Will return the closest points in two geometries.


On Thu, Aug 28, 2014 at 10:44 AM, Serega Sheypak <ser...@gm...>
wrote:

> It doesn't work for polygons
> 28.08.2014 9:11 пользователь "sunish" <sun...@gm...> написал:
>
> Have you tried the GeodeticCalculator?
>>
>>
>> http://docs.geotools.org/latest/userguide/library/referencing/calculator.html
>>
>>
>> On Thu, Aug 28, 2014 at 12:32 AM, Serega Sheypak <
>> ser...@gm...> wrote:
>>
>>> I know it :)
>>> All Geometry objects have coordinates in degrees (longitude, latitude),
>>> since it's a WSG_84 shape file. You can't use distance method because it
>>> works only for "planar" objects, correctly projected on 2D sufrace.
>>>
>>>
>>> 2014-08-27 20:26 GMT+04:00 sunish <sun...@gm...>:
>>>
>>> SimpleFeatureIterator it = features.features();
>>>>
>>>>  while (it.hasNext()) {
>>>>         SimpleFeature f = it.next();
>>>>         Geometry geom = f.getDefaultGeometry();
>>>>  }
>>>> it.close();
>>>>
>>>> Geometry has function distance(Geometry geom2);
>>>>
>>>>
>>>> http://www.vividsolutions.com/jts/javadoc/com/vividsolutions/jts/geom/Geometry.html
>>>>
>>>>
>>>> http://www.vividsolutions.com/jts/javadoc/com/vividsolutions/jts/geom/Geometry.html#distance%28com.vividsolutions.jts.geom.Geometry%29
>>>>
>>>>
>>>>
>>>> On Wed, Aug 27, 2014 at 3:45 PM, Serega Sheypak <
>>>> ser...@gm...> wrote:
>>>>
>>>>> Hi, I have a several multiplogons loaded from shp file
>>>>> I'm usng import org.geotools.data.DataStore to load multipolygons and
>>>>> SimpleFeatureCollection features = featureSource.features to iterate
>>>>> over loaded geometries.
>>>>> My geometries have longitude, latitude coordinates.
>>>>>
>>>>> I want to calculate distance between my multipolygons and get result
>>>>> in meters. If multipolygons intersects, distance should be 0.0 meters.
>>>>>
>>>>> I have a mess in my head, I've tried to use
>>>>> http://docs.geotools.org/latest/tutorials/geometry/geometrycrs.html
>>>>>
>>>>> but it uses deprecated classes.. Can you give me some link to read how
>>>>> to do it in Java?
>>>>>
>>>>>
>>>>>
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>>>>>
>>>>>
>>>>
>>>>
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>>>
>>