Ejemplo n.º 1
0
  public Field resample(Set set, int sampling_mode, int error_mode)
      throws VisADException, RemoteException {
    FlatField fld = getAdaptedFlatField();
    if (fld == null) {
      throw new VisADException("Cannot get cached FlatField");
    }

    return fld.resample(set, sampling_mode, error_mode);
  }
Ejemplo n.º 2
0
  /**
   * Construct a satellite display using the specified McIDAS map file, image source. The image can
   * be displayed on a 3D globe or on a flat rectillinear projection.
   *
   * @param mapFile location of the McIDAS map file (path or URL)
   * @param imageSource location of the image source (path or URL)
   * @param display3D if true, use 3D display, otherwise flat rectillinear
   * @param remap remap the image into a domain over North America
   */
  public SatDisplay(String mapFile, String imageSource, boolean display3D, boolean remap) {
    try {
      //  Read in the map file
      BaseMapAdapter baseMapAdapter;
      if (mapFile.indexOf("://") > 0) // URL specified
      {
        baseMapAdapter = new BaseMapAdapter(new URL(mapFile));
      } else // local disk file
      {
        baseMapAdapter = new BaseMapAdapter(mapFile);
      }

      // Create the display and set up the scalar maps to map
      // data to the display
      ScalarMap latMap; // latitude  -> YAxis
      ScalarMap lonMap; // longitude -> XAxis
      if (display3D) {
        display = new DisplayImplJ3D("display");
        latMap = new ScalarMap(RealType.Latitude, Display.Latitude);
        lonMap = new ScalarMap(RealType.Longitude, Display.Longitude);
      } else {
        display = new DisplayImplJ3D("display", new TwoDDisplayRendererJ3D());
        latMap = new ScalarMap(RealType.Latitude, Display.YAxis);
        lonMap = new ScalarMap(RealType.Longitude, Display.XAxis);
      }
      display.addMap(latMap);
      display.addMap(lonMap);

      // set the display to a global scale
      latMap.setRange(-90.0, 90.0);
      lonMap.setRange(-180.0, 180.0);

      // create a reference for the map line
      DataReference maplinesRef = new DataReferenceImpl("MapLines");
      maplinesRef.setData(baseMapAdapter.getData());

      // set the attributes of the map lines (color, location)
      ConstantMap[] maplinesConstantMap = new ConstantMap[4];
      maplinesConstantMap[0] = new ConstantMap(0., Display.Blue);
      maplinesConstantMap[1] = new ConstantMap(1., Display.Red);
      maplinesConstantMap[2] = new ConstantMap(0., Display.Green);
      maplinesConstantMap[3] = new ConstantMap(1.001, Display.Radius); // just above the image

      // read in the image
      AreaAdapter areaAdapter = new AreaAdapter(imageSource);
      FlatField image = areaAdapter.getData();

      // Extract the metadata from the image
      FunctionType imageFunctionType = (FunctionType) image.getType();
      RealTupleType imageDomainType = imageFunctionType.getDomain();
      RealTupleType imageRangeType = (RealTupleType) imageFunctionType.getRange();

      // remap and resample the image
      if (remap) {
        int SIZE = 256;
        RealTupleType latlonType =
            ((CoordinateSystem) imageDomainType.getCoordinateSystem()).getReference();
        Linear2DSet remapDomainSet =
            new Linear2DSet(latlonType, -4.0, 70.0, SIZE, -150.0, 5.0, SIZE);
        image = (FlatField) image.resample(remapDomainSet, Data.NEAREST_NEIGHBOR, Data.NO_ERRORS);
      }

      // select which band to show...
      ScalarMap rgbMap = new ScalarMap((RealType) imageRangeType.getComponent(0), Display.RGB);
      display.addMap(rgbMap);

      // set the enhancement to a grey scale
      ColorControl colorControl = (ColorControl) rgbMap.getControl();
      colorControl.initGreyWedge();

      // create a data reference for the image
      DataReferenceImpl imageRef = new DataReferenceImpl("ImageRef");
      imageRef.setData(image);

      // add the data references to the display
      display.disableAction();
      drmap = new DefaultRendererJ3D();
      drimage = new DefaultRendererJ3D();
      drmap.toggle(false);
      drimage.toggle(false);
      display.addDisplayListener(this);

      display.addReferences(drmap, maplinesRef, maplinesConstantMap);
      display.addReferences(drimage, imageRef, null);
      display.enableAction();
    } catch (Exception ne) {
      ne.printStackTrace();
      System.exit(1);
    }
  }