Hi,
Thanks for your answer. I added mapPane.setReset(true) just after I
added my context (which contains the layers) to the JMapPane (mapPane),
but I still have no image... What's wrong?
Sofie
Martin Schmitz wrote:
> Call JMapPane.setReset( true ) after adding (all) new layer(s)...
>
> Martin Schmitz schrieb:
>
>> Call JMapPane.setReset( true ) after adding (all) new layer(s)...
>>
>> sofiedemeyer schrieb:
>>
>>> Hi,
>>>
>>> I am a newbee in the use of geotools. I just wanted to test the
>>> abilities of
>>> geotools with a simple example: displaying 2 points. But when I
>>> execute the
>>> code (see below), nothing is seen on the screen, only the background.
>>> Can anyone help me? What am I doing wrong?
>>>
>>> Thanks for your help,
>>>
>>> Sofie
>>>
>>> import org.geotools.map.*;
>>> import org.geotools.gui.swing.*;
>>> import org.geotools.renderer.*;
>>> import org.geotools.renderer.lite.*;
>>> import org.geotools.geometry.*;
>>> import org.geotools.feature.*;
>>> import org.geotools.styling.*;
>>> import org.geotools.referencing.crs.*;
>>>
>>> import com.vividsolutions.jts.geom.*;
>>>
>>> import javax.swing.*;
>>> //import java.awt.*;
>>> import java.util.*;
>>>
>>> public class Visualisation {
>>> MapContext context = null;
>>> public Visualisation(){
>>> try{
>>> System.out.println("Context: "+context);
>>> context = new DefaultMapContext();
>>>
>>> context.setTitle("MapTitle");
>>> context.setContactInformation("ContactInformation");
>>> context.setAbstract("Abstract");
>>>
>>> //Create feature collection
>>> AttributeType[] types = new AttributeType[1];
>>> types[0] = AttributeTypeFactory.newAttributeType("centre",
>>> Point.class, false, 0, null, DefaultGeographicCRS.WGS84);
>>>
>>> FeatureType pointType =
>>> FeatureTypeFactory.newFeatureType(types,
>>> "pointfeature");
>>>
>>> GeometryFactory geomFac = new GeometryFactory();
>>> Point point1 = geomFac.createPoint(new Coordinate(0.0, 0.0));
>>> Point point2 = geomFac.createPoint(new Coordinate(100.0,
>>> 100.0));
>>> Feature feature1 = pointType.create(new Object[]{point1});
>>> Feature feature2 = pointType.create(new Object[]{point2});
>>>
>>> FeatureCollection fc = FeatureCollections.newCollection();
>>> fc.add(feature1);
>>> fc.add(feature2);
>>>
>>> //Create the map style
>>> StyleBuilder sb = new StyleBuilder(); Style style =
>>> sb.createStyle();
>>> Mark circle = sb.createMark(sb.MARK_CIRCLE,
>>> java.awt.Color.RED);
>>> Graphic graph2 = sb.createGraphic(null, circle, null, 1, 100,
>>> 0);
>>> PointSymbolizer pointSymbolizer =
>>> sb.createPointSymbolizer(graph2);
>>>
>>> style.addFeatureTypeStyle(sb.createFeatureTypeStyle("point", new
>>> Symbolizer[]{pointSymbolizer}));
>>> //Create layer from style
>>> MapLayer aLayer = new DefaultMapLayer(fc, style, "layer1");
>>>
>>> //Add layer to map
>>> context.addLayer(aLayer);
>>> System.out.println("Context: "+context);
>>> show();
>>> }catch(Exception e){ e.printStackTrace(); }
>>> }
>>> public void show(){
>>> JMapPane mapPane = new JMapPane();
>>> mapPane.setContext(context);
>>> mapPane.setRenderer(new StreamingRenderer());
>>> JFrame frame = new JFrame();
>>> frame.setTitle("Visualisation");
>>> frame.setContentPane(mapPane);
>>> frame.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
>>> frame.setSize(640,480);
>>> frame.setVisible(true);
>>> }
>>>
>>> }
>>>
>
>
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