arnauld:
From the below link I show a label rotation for multi LineString:
http://osgeo-org.1803224.n2.nabble.com/How-to-Make-Transparent-Overlay-Layer-td4127023.html#a4183749
If the issue is parsing xml you may want to start with SAX and then going to
DOM.
Get the simple case working then move to a List of objects of lat, lon for more
dynamic data population.
The following is a simple LineString plot:
package org.geotools.demo.examples;
import java.util.ArrayList;
import org.geotools.data.DataUtilities;
import org.geotools.feature.FeatureCollection;
import org.geotools.feature.FeatureCollections;
import org.geotools.feature.simple.SimpleFeatureBuilder;
import org.geotools.geometry.jts.JTSFactoryFinder;
import org.opengis.feature.simple.SimpleFeature;
import org.opengis.feature.simple.SimpleFeatureType;
import com.vividsolutions.jts.geom.Coordinate;
import com.vividsolutions.jts.geom.CoordinateArrays;
import com.vividsolutions.jts.geom.GeometryFactory;
import com.vividsolutions.jts.geom.LineString;
import com.vividsolutions.jts.geom.Point;
import org.geotools.feature.FeatureIterator;
import com.vividsolutions.jts.geom.Geometry;
import org.geotools.data.FeatureSource;
import org.geotools.map.DefaultMapContext;
import org.geotools.map.MapContext;
import org.geotools.swing.JMapFrame;
public class DisplayForcedLineString {
public static void main(String[] args) throws Exception {
final SimpleFeatureType TYPE = DataUtilities.createType("Location",
"location:LineString,name:String"); // see createFeatureType();
FeatureCollection collection = FeatureCollections.newCollection();
double lon[] = {15, 23, 50};
double lat[] = {15, 30, 25};
String name="test";
ArrayList cords = new ArrayList();
for(int i=0;i<=2;i++){
cords.add(new Coordinate(lon[i],lat[i]));
}
GeometryFactory factory = JTSFactoryFinder.getGeometryFactory(null);
CoordinateArrays ca = new CoordinateArrays();
Coordinate[] cord = ca.toCoordinateArray(cords);
LineString lineString = factory.createLineString(cord);
SimpleFeature feature = SimpleFeatureBuilder.build( TYPE, new
Object[]{lineString, name}, null );
collection.add( feature );
FeatureIterator iterator = collection.features();
try {
while (iterator.hasNext()) {
SimpleFeature features = (SimpleFeature)iterator.next();
Geometry geometry = (Geometry) features.getDefaultGeometry();
Coordinate[] coords = geometry.getCoordinates();
for( int i = 0; i < coords.length; i++ ) {
System.out.println(coords[i]);
}
}
}
finally {
if( iterator != null ){
// YOU MUST CLOSE THE ITERATOR!
iterator.close();
}
}
FeatureSource featureSource = DataUtilities.source(collection);
MapContext map = new DefaultMapContext();
map.setTitle("Quickstart");
map.addLayer(featureSource, null);
// Now display the map
JMapFrame.showMap(map);
}
}
-----Original Message-----
From: "arnauld ndefo" <[email protected]>
Sent: Wednesday, June 9, 2010 5:48pm
To: [email protected]
Subject: [Geotools-gt2-users] geotool+coordinate latitude, longitude
Here is all my java code
import org.geotools.feature.SchemaException;import
org.geotools.feature.simple.SimpleFeatureBuilder;import
org.geotools.geometry.jts.ReferencedEnvelope;import org.geotools.map.*;import
org.geotools.referencing.CRS;import
org.geotools.referencing.crs.DefaultGeocentricCRS;import
org.geotools.referencing.crs.DefaultGeographicCRS;import
org.geotools.renderer.lite.StreamingRenderer;import
org.geotools.renderer.style.IconStyle2D;import
org.geotools.resources.CRSUtilities;import org.geotools.styling.*;import
org.geotools.swing.JMapFrame;import org.geotools.swing.JMapPane;import
org.opengis.feature.simple.SimpleFeature;import
org.opengis.feature.simple.SimpleFeatureType;import
org.opengis.referencing.FactoryException;import
org.opengis.referencing.NoSuchAuthorityCodeException;import
org.opengis.referencing.crs.CoordinateReferenceSystem;import
org.opengis.referencing.operation.TransformException;public class App {
public static void main( String[] args ) throws IOException,
FactoryRegistryException, SchemaException, ClassNotFoundException, Exception
{ App app=new App(); Map params= new HashMap();
params.put("dbtype", "postgis"); params.put("host", "localhost");
params.put("port", "5432"); params.put("database", "gis");
params.put("user", "arnauld"); params.put("passwd","root");
//params.put(PostgisDataStoreFactory.LOOSEBBOX, "true" );
params.put(PostgisDataStoreFactory.SCHEMA.key, "public" ); DataStore
pgDatastore = DataStoreFinder.getDataStore(params); FeatureSource osmline
= pgDatastore.getFeatureSource("planet_osm_line"); FeatureSource osmpoint
= pgDatastore.getFeatureSource("planet_osm_point"); FeatureSource
osmpolygon=pgDatastore.getFeatureSource("planet_osm_polygon");
FeatureSource osmroad=pgDatastore.getFeatureSource("planet_osm_roads");
StyleBuilder sb= new StyleBuilder(); ///Style des lignes
LineSymbolizer line= sb.createLineSymbolizer(Color.yellow,4); Style
style=sb.createStyle(line); MapContext map=new
DefaultMapContext();CoordinateReferenceSystem crs=CRS.decode("EPSG:4326",true);
//CoordinateReferenceSystem crs=DefaultGeographicCRS.WGS84;
ReferencedEnvelope re=new ReferencedEnvelope(10.1602292,
10.1741338,36.8468991,36.853853199999996, crs);
map.setCoordinateReferenceSystem(crs); map.setAreaOfInterest(re);
map.setTitle("Carte géographique de menzah 6");
map.addLayer(osmline.getFeatures(),null);
map.addLayer(osmpoint.getFeatures(),null);
map.addLayer(osmroad.getFeatures(),null);
map.addLayer(osmpolygon.getFeatures(), stylepolygon); GeometryFactory geo=new
GeometryFactory();Coordinate coord2 = new
Coordinate(1131439.2747,4418792.6636); Coordinate coord3 = new
Coordinate(1131081.0001,4418731.4201);Coordinate coord1 = new
Coordinate(1131270.8550,4418856.9693);Coordinate[]
coord={coord3,coord1,coord2}; LineString lines =geo.createLineString(coord);
SimpleFeatureType
type=DataUtilities.createType("line","centerline:LineString:srid=4326,name:String");
FeatureCollection<SimpleFeatureType, SimpleFeature> fcline =
FeatureCollections.newCollection(); SimpleFeatureBuilder featureBuilder =
new SimpleFeatureBuilder(type); featureBuilder.add(lines);
SimpleFeature feature = featureBuilder.buildFeature(null);
fcline.add(feature);map.addLayer(fcline, style);JMapFrame frame =new
JMapFrame(map); frame.enableStatusBar(true);
frame.enableToolBar(true); frame.setSize(700,700);
frame.setVisible(true);This code draw LineString fine on the map. But in my
file .xml i have rather this kind of data:<bounds minlat='36.8468991'
minlon='10.1602292' maxlat='36.853853199999996' maxlon='10.1741338'
origin='CGImap 0.0.2' /> <node id='243997182' timestamp='2008-01-29T14:58:17Z'
uid='22060' user='chrischan' visible='true' version='1' changeset='708944'
lat='36.8570917' lon='10.1670734' /> <node id='243997183'
timestamp='2008-01-29T14:58:17Z' uid='22060' user='chrischan' visible='true'
version='1' changeset='708944' lat='36.8554984' lon='10.1685669' /> <node
id='243997185' timestamp='2009-05-12T23:28:34Z' uid='123321' user='Hatem'
visible='true' version='2' changeset='1170291' lat='36.8536855'
lon='10.1699434' />When i construct the coordinate with x=lon and y=lat, my
LineString don't draw on a JMapframe frame.How can i do to use without problem
the lat and lon which are in my .xml file???Ndefo Kamgne ArnauldCité
Ettayour,Immeuble Bolbol 1,Appartement A2,Ariana0021624249357
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