Hello

I'm using gt2-2.3.5
I'm trying to read and render a AbstractGridCoverage2DReader  (actually I tried with a ImageMosaicReader and a WorldImageReader to make it simpler). But the panel remains grey.

What can I do?  Where is my mistake?  Pleeease someone.

Here is my code:

source0 = "C:/MapsRepository/test4_12/Switzerland_111_93.JPG";
File file = new File(source0);
WorldImageReader reader = new WorldImageReader( file );

//source = "C:/MapsRepository/test4_12/test.shp";
//File file = new File(source);
//ImageMosaicReader reader = new ImageMosaicReader(file);

// NB:  This works, IT ACTUALLY DISPLAYS MY IMAGE! :
//GridCoverage2D coverage = (GridCoverage2D) reader.read(null);
//coverage.show();
 
StyleBuilder sb = new StyleBuilder();
RasterSymbolizer rsDem = sb.createRasterSymbolizer();
org.geotools.styling.Style demStyle = sb.createStyle(rsDem);

System.out.println(" original env " + reader.getOriginalEnvelope());

ReferencedEnvelope dataEnvelope = new ReferencedEnvelope( reader.getOriginalEnvelope(), crs );
DefaultMapContext map = new DefaultMapContext(crs);
map.setCoordinateReferenceSystem(crs);
map.setAreaOfInterest(dataEnvelope);
map.addLayer(reader, demStyle);

System.out.println("area of interest" + map.getAreaOfInterest());
       
JMapPane mapPanel = new JMapPane();
mapPanel.setContext(map);
StreamingRenderer render = new StreamingRenderer();
mapPanel.setRenderer(render);
mapPanel.setMapArea(dataEnvelope);
       
       
JFrame frm = new JFrame();
frm.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frm.setSize(800,600);
frm.getContentPane().add(BorderLayout.CENTER,mapPanel);
frm.setVisible(true);


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