Re: [Geotools-gt2-users] Updates to the user's guide?

[Wouter S. <wou...@gm...>]

Hi Hari,

I don't have any example with the 2.5 version, but this is how i do it
with the 2.4 version:

Map connect = new HashMap();

        if (file!=null){
            try {
                connect.put( "url", file.toURI().toURL());

                ShapefileDataStore dataStore = (ShapefileDataStore)
DataStoreFinder.getDataStore( connect );
                String[] typeNames = dataStore.getTypeNames ();
                String typeName = typeNames[0];

dataStore.forceSchemaCRS(featureType.getDefaultGeometry().getCoordinateSystem());

                logger.debug("Shapefile typename: "+typeName);

                FeatureSource featureSource =
dataStore.getFeatureSource( typeName );
                FeatureCollection collection = featureSource.getFeatures();
                FeatureIterator iterator = collection.features();

                try {
                    while( iterator.hasNext() ){

                        Feature feature = iterator.next();
                        Geometry geometry = (Geometry)
feature.getAttribute("the_geom");

                        if (geometry.getNumGeometries()>1){
                            for (int i = 0; i <
geometry.getNumGeometries(); i++){



lr.addObject(createFeature(geometry.getGeometryN(i)));
                            }
                        } else if
(geometry.getGeometryType().startsWith("Multi")){

lr.addObject(createFeature(geometry.getGeometryN(0)));
                        } else lr.addObject(createFeature(geometry));
                    }
                }
                finally {
                    iterator.close();
                    dataStore.dispose();
                }


            } catch (MalformedURLException e) {
                e.printStackTrace();
                throw new DaoException(e);
            } catch (IOException e) {
                e.printStackTrace();
                throw new DaoException(e);
            }
        }

This example extracts all the geometries out of a shapefile, and puts
them in a custom object (the lr-object)

hope this helps?

grtz, w


On Thu, Aug 21, 2008 at 4:50 PM, Nair, Hari <Har...@jh...> wrote:
> I just started with geotools yesterday, and I'm having trouble with the
> "Reading a shapefile" example in the user's guide.
>
> Here are a few problems:
>
> 1) The repository locations don't seem to be correct.  Ibiblio and
> repo1.maven.org don't have org.geotools directories.
>
> 2) The artifactId's in the pom.xml file are given as gt2-*, but the 2.5
> release only has gt-*, right?  There are no 2.5-M3 directories in the
> repositories for gt2-*.
>
> 3) The example itself has errors in eclipse.  Specifically,
>  Geometry geometry = feature.getDefaultGeometry();
> is not legal.  There are warnings for the usage of Map and the Feature
> objects.
>
> Are there significant updates needed to this example to get it to work with
> 2.5-M3?
>
> Ultimately, I want to be able to read shapefiles and reproject them from
> lon/lat to pixel coordinates to overlay on a polar stereographic map.  I
> already have the reprojection code written in Java so I wanted java code to
> read shapefiles.
>
> Thanks,
> Hari
>
>
> --
> Hari Nair
> Mail Stop MP2-S128
> Applied Physics Laboratory
> 11100 Johns Hopkins Road
> Laurel, MD 20723
> (443) 778-4017
>
>
>
>
> -------------------------------------------------------------------------
> This SF.Net email is sponsored by the Moblin Your Move Developer's challenge
> Build the coolest Linux based applications with Moblin SDK & win great prizes
> Grand prize is a trip for two to an Open Source event anywhere in the world
> http://moblin-contest.org/redirect.php?banner_id=100&url=/
> _______________________________________________
> Geotools-gt2-users mailing list
> Geo...@li...
> https://lists.sourceforge.net/lists/listinfo/geotools-gt2-users
>