Generic code sample for creating a map

The complete source code for this example can be found in the following file:

1. Instantiate the reader. In this example, you are using the IlvShapeReader.

try

{

featureIterator = new IlvShapeFileReader(shapeFileName, dbfFileName);

}

catch (IOException e)

{

System.err.println("IOError while instantiating reader");

}

2. Retrieve the feature renderer from the reader.dted.

IlvFeatureRenderer renderer =

featureIterator.getDefaultFeatureRenderer();

3. Create coordinate transformation.

IlvCoordinateTransformation identity = IlvCoordinateTransformation.CreateTransformation(null, null);

4. Retrieve the first map feature.

IlvMapFeature feature = null;

try

{

feature = featureIterator.getNextFeature();

}

catch (IOException io)

{

System.err.println("IOExeption while getting next feature"

+io.getMessage());

}

// Loop on all the available map features.

while (feature != null)

{

try {

5. Create the graphic object representing the map feature.

IlvGraphic graphic = renderer.makeGraphic(feature, identity);

6. Add the graphic object to the manager.

manager.addObject(graphic, layerIndex, false);

7. Handle exceptions.

} catch (IlvMapRenderException e)

{

// Should not occur: renderer provided by the feature iterator.

System.out.println("Rendering Exception " + e.getMessage());

} catch (IlvCoordinateTransformationException cte) {

System.err.println("Coordinate transformation exception " + cte.getMessage());

}