After adding a layer, a

JMapPane.setReset(true);
JMapPane.repaint();

must follow, to make it visible.

Furthermore I use  JMapPane.setMapArea(.) instead of 
MapContext.setAreaOfInterest(.).

Good luck...

Martin

> -----Ursprüngliche Nachricht-----
> Von: "dziadgba dziadgba" <[EMAIL PROTECTED]>
> Gesendet: 11.04.07 00:45:24
> An: [email protected]
> Betreff: [Geotools-gt2-users] geotools visualization

hy to everybody,
> a few years ago I used geotools to calculate and visualize itineraries for
> bikers using shape files containing road information.
> 
> No I would like to provide an interface for the placement of antennas in the 
> territory, but it seems that everything changed in geotools. I did the 
> following to visualize a shapefile but nothing is visualized and no error 
> message occurs. Shapefile includes streams. Maybe someone more expert can 
> have a look on it?
> 
> 
> thanks
> dyiadgba
> 
> loadShapefileIntoCatalog(SHAPEFILENAME);
> ...
> StyleBuilder sb = new StyleBuilder();
> LineSymbolizer lsStream = sb.createLineSymbolizer(Color.BLUE, 6);
> Style streamsStyle = sb.createStyle
> (lsStream);
> ...
> Panel mapGUI = new Panel();
> jmp = new JMapPane();
> jmp.setBackground(Color.white);
> 
> renderer = new StreamingRenderer();
> 
> context = new DefaultMapContext(DefaultGeographicCRS.WGS84);
> context.setAreaOfInterest(demoBase.envlp_NoEdges2);
> 
> jmp.setRenderer(renderer);
> jmp.setContext(context);
> 
> FeatureSource shpFS = getAShapefileFeatureSourceFromCatalog();
> MapLayer m1 = new DefaultMapLayer(shpFS,streamsstyle);
> 
> demoGUI.context.addLayer(0,m1);
> 
> 
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-- 

mfg

Martin

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