title: WorldWind: elevation of the ground
body: <p>I use WorldWind to display in an android application a globe. I managed to display the satellite image.</p>
  
  <pre><code>import android.support.v7.app.AppCompatActivity;
  import android.os.Bundle;
  import android.widget.FrameLayout;
  
  import gov.nasa.worldwind.WorldWindow;
  import gov.nasa.worldwind.layer.BackgroundLayer;    
  import gov.nasa.worldwind.layer.BlueMarbleLandsatLayer;
  
  public class MainActivity extends AppCompatActivity {
  
      @Override
      protected void onCreate(Bundle savedInstanceState) {
          super.onCreate(savedInstanceState);
          setContentView(R.layout.activity_main);
  
          // Create a WorldWindow (a GLSurfaceView)...
          WorldWindow wwd = new WorldWindow(getApplicationContext());
          // ... and add some map layers
          wwd.getLayers().addLayer(new BackgroundLayer());
          wwd.getLayers().addLayer(new BlueMarbleLandsatLayer());            
  
          // Add the WorldWindow view object to the layout that was reserved for the globe.
          FrameLayout globeLayout = (FrameLayout) findViewById(R.id.globe);
          globeLayout.addView(wwd);
      }
  
  }
  </code></pre>
  
  <p>From the example of the WorldWind web site I would like to add the elevation (relief) of the terrain on the globe (to see mountains, volcanoes ...).
  How can I do ?</p>
  
  <p>Thank you</p>