Class GridPlot

src/org/opensourcephysics/display2d/GridPlot.java:30–471

GridPlot plots a scalar field by coloring pixels using a buffered image. The buffered image is scaled before it is copied to a drawing panel. @author Wolfgang Christian @created February 15, 2003 @version 1.0

 * @version    1.0
 */
public class GridPlot extends MeasuredImage implements Plot2D {
  boolean autoscaleZ = true;
  boolean symmetricZ = false;
  GridData griddata;
  int[] rgbData;
  Grid grid;
  ColorMapper colorMap;
  private int ampIndex = 0; // amplitude index

  /**
   * Constructs the GridPlot using the given griddata.
   *
   * @param griddata the point data
   */
  public GridPlot(GridData griddata) {
    setGridData(griddata);
  }

  /**
   * Constructs a GridPlot without any data.
   */
  public GridPlot() {}

  /**
   * Sets the indexes for the data component that will be plotted.
   *
   * @param indexes the sample-component
   */
  @Override
public void setIndexes(int[] indexes) {
    ampIndex = indexes[0];
  }

  /**
   * Gets the GridData object.
   * @return GridData
   */
  @Override
public GridData getGridData() {
    return griddata;
  }

  /**
   * Sets the data storage to the given value.
   *
   * @param _griddata new data storage
   */
  @Override
public void setGridData(GridData _griddata) {
    griddata = _griddata;
    if(colorMap==null) {
      colorMap = new ColorMapper(100, -1, 1, ColorMapper.SPECTRUM);
    }
    if(griddata==null) {
      return;
    }
    int nx = griddata.getNx();
    int ny = griddata.getNy();