Class GrayscalePlot

src/org/opensourcephysics/display2d/GrayscalePlot.java:35–548

GrayscalePlot renders 2d data as a grayscale image. A grayscale plot looks similar to a grid plot with a grayscale color palette. However, it uses a different rendering model. @author Wolfgang Christian @created February 2, 2003 @version 1.0

 * @version    1.0
 */
public class GrayscalePlot extends MeasuredImage implements Plot2D {
  GridData griddata;
  double floor, ceil;
  boolean autoscaleZ = true;
  boolean symmetricZ=false;
  short[] bwData;           // 16 bits grayscale
  Grid grid;
  ZExpansion zMap = null;
  private int ampIndex = 0; // amplitude index
  private JFrame legendFrame;

  /**
   * Constructs a checker field with the given width and height.
   * @param griddata
   */
  public GrayscalePlot(GridData griddata) {
    setGridData(griddata);
    update();
  }

  /**
   * Gets the x coordinate for the given index.
   *
   * @param i int
   * @return double the x coordinate
   */
  @Override
public double indexToX(int i) {
    return griddata.indexToX(i);
  }

  /**
   * Gets the y coordinate for the given index.
   *
   * @param i int
   * @return double the y coordinate
   */
  @Override
public double indexToY(int i) {
    return griddata.indexToY(i);
  }

  /**
   * Gets closest index from the given x  world coordinate.
   *
   * @param x double the coordinate
   * @return int the index
   */
  @Override
public int xToIndex(double x) {
    return griddata.xToIndex(x);
  }

  /**
   * Gets closest index from the given y  world coordinate.
   *
   * @param y double the coordinate
   * @return int the index