[Geotools-gt2-users] JMapPane not showing features.

[Nikos <my...@ya...>]

Hello, I'm trying to use a JMapPane to display some data, but I get nothing. I haven't found a jmappane example and so I'm just guessing how to use it, the code I've written is this :

            PostGISConnectionDialog pgis_dialog = new PostGISConnectionDialog(this);  // modal window to input postgis connection properties.
            PostGISProperties pgis_properties = pgis_dialog.getProperties();     // PostGISProperties keeps hostname, port, username, etc.
            
            try {
                PostGISReader pgis_reader = new PostGISReader(pgis_properties);      // PostGISReader provides easy access to the postgis database.
                
                FeatureCollection feature_collection = pgis_reader.getFeatures();        
                StyleFactory style_fact = CommonFactoryFinder.getStyleFactory(null);
                Style style1 = style_fact.getDefaultStyle();
                
                CoordinateReferenceSystem crs = pgis_reader.getCoordRefSystem();
                MapContext map_context = (MapContext)new DefaultMapContext(crs);
                map_context.addLayer(feature_collection, style1);
                
                GTRenderer gt_renderer = (GTRenderer)new StreamingRenderer();
                
                map_pane = new JMapPane(gt_renderer, map_context);
                jPanel1.add(map_pane, BorderLayout.CENTER);  
                this.validate();
            } catch (IOException e) {
                JOptionPane.showMessageDialog(this, "Could not access the database.", "Error",JOptionPane.ERROR_MESSAGE);
            }    


PostGISReader.getFeatures() and PostGISReader.getCoordRefSystem() return correct values, i have tested this. So, I must be doing something really wrong :) Any help is welcome :)

Nick Lefkaditis




       
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