} else {                                    xrange = Math.max(range, xrange);               }            }            if(xrange <= 0 | yrange <= 0 )      return r;             if( xrange > yrange )      range = xrange;            else                       range = yrange;            for (int i=0; i<axis.size(); i++) {               a = (Axis)axis.elementAt(i);               a.maximum = a.minimum + range;            }/***          Get the new data rectangle*/            dr = getDataRectangle(g, r);/***          Modify the data rectangle so that it is square.*/	    if(dr.width > dr.height) {                    x += (dr.width-dr.height)/2.0;                    width -= dr.width-dr.height;            } else {                    y += (dr.height-dr.width)/2.0;                    height -= dr.height-dr.width;            }            return new Rectangle(x,y,width,height);	}/** *  Calculate the rectangle occupied by the data */       protected Rectangle getDataRectangle(Graphics g, Rectangle r) {            Axis a;            int waxis;            int x     = r.x;            int y     = r.y;            int width = r.width;            int height = r.height;            for (int i=0; i<axis.size(); i++) {               a = ((Axis)axis.elementAt(i));                waxis = a.getAxisWidth(g);               switch (a.getAxisPos()) {               case Axis.LEFT:                          x += waxis;                          width -= waxis;                          break;               case Axis.RIGHT:                          width -= waxis;                          break;               case Axis.TOP:                          y += waxis;                          height -= waxis;                          break;               case Axis.BOTTOM:                          height -= waxis;                          break;               }            }             return new Rectangle(x, y, width, height);            }/** * *  Draw the Axis. As each axis is drawn and aligned less of the canvas *  is avaliable to plot the data. The returned Rectangle is the canvas *  area that the data is plotted in. */        protected Rectangle drawAxis(Graphics g, Rectangle r) {            Axis a;            int waxis;            Rectangle dr;            int x;            int y;            int width;            int height;            if(square) r = ForceSquare(g,r);            dr = getDataRectangle(g,r);            x      = dr.x;            y      = dr.y;            width  = dr.width;            height = dr.height;            if(clearAll ) {               Color c = g.getColor();	       g.setColor(DataBackground);               g.fillRect(x,y,width,height);               g.setColor(c);            }// Draw a frame around the data area (If requested)            if(frame) drawFrame(g,x,y,width,height);// Now draw the axis in the order specified aligning them with the final// data area.            for (int i=0; i<axis.size(); i++) {               a = ((Axis)axis.elementAt(i));               a.data_window = new Dimension(width,height);               switch (a.getAxisPos()) {               case Axis.LEFT:                          r.x += a.width;                          r.width -= a.width;                          a.positionAxis(r.x,r.x,y,y+height);                          if(r.x == x ) {                             a.gridcolor = gridcolor;                             a.drawgrid  = drawgrid;                             a.zerocolor = zerocolor;                             a.drawzero  = drawzero;			   }                           a.drawAxis(g);                           a.drawgrid  = false;                           a.drawzero  = false;                          break;               case Axis.RIGHT:                          r.width -= a.width;                          a.positionAxis(r.x+r.width,r.x+r.width,y,y+height);                          if(r.x+r.width == x+width ) {                             a.gridcolor = gridcolor;                             a.drawgrid  = drawgrid;                             a.zerocolor = zerocolor;                             a.drawzero  = drawzero;                          }                          a.drawAxis(g);                          a.drawgrid  = false;                          a.drawzero  = false;                           break;               case Axis.TOP:                          r.y += a.width;                          r.height -= a.width;                          a.positionAxis(x,x+width,r.y,r.y);                          if(r.y == y) {                             a.gridcolor = gridcolor;                             a.drawgrid  = drawgrid;                             a.zerocolor = zerocolor;                             a.drawzero  = drawzero;                          }                          a.drawAxis(g);                          a.drawgrid  = false;                          a.drawzero  = false;                          break;               case Axis.BOTTOM:                          r.height -= a.width;                          a.positionAxis(x,x+width,r.y+r.height,r.y+r.height);                          if(r.y +r.height == y+height ) {                             a.gridcolor = gridcolor;                             a.drawgrid  = drawgrid;                             a.zerocolor = zerocolor;                             a.drawzero  = drawzero;                          }                          a.drawAxis(g);                          a.drawgrid  = false;                          a.drawzero  = false;                          break;               }            }           return r;      }/* *  Draws a frame around the data area. */      protected void drawFrame(Graphics g, int x, int y, int width, int height) {        Color c = g.getColor();        if( framecolor != null ) g.setColor(framecolor);        g.drawRect(x,y,width,height);        g.setColor(c);     }}/** * This should be thrown if any of the packages fileloaders  * encounter a format error*/class FileFormatException extends Exception {    public FileFormatException(String s) {        super(s);    }}/** *   This is a separate thread that flashes a message *   on the Graph2D canvas that data is loading */class LoadMessage extends Thread {        Graph2D  g2d;        String   message    = "Loading Data ... Please Wait!";        String   newmessage = null;        long     visible    = 500;        long     invisible  = 200;        Color    foreground = Color.red;        Graphics lg = null;        Font     f = null;        /** *    Instantiate the class * @param g2d The Graph2D canvas to draw message on * */                    public LoadMessage(Graph2D g2d) {           this.g2d = g2d;        }/** *  Instantiate the class * @param g2d The Graph2D canvas to draw message on * @param s   The string to flash on the canvas */                    public LoadMessage(Graph2D g2d, String s) {           this(g2d);           this.message = s;        }/** *  Instantiate the class * @param g2d The Graph2D canvas to draw message on * @param s   The string to flash on the canvas * @param visible Number of milliseconds the message is visible * @param invisible Number of milliseconds the message is invisible */                    public LoadMessage(Graph2D g, String s, long visible, long invisible) {            this(g,s);            this.visible = visible;            this.invisible = invisible;        }/** *   begin displaying the message */        public void begin() {             g2d.clearAll = false;            g2d.paintAll = false;            super.start();	  }/** *   end displaying message and force a graph repaint */        public void end() {                         super.stop();            g2d.clearAll = true;            g2d.paintAll = true;            if(lg != null) lg.dispose();            g2d.repaint();	  }/** *   The method to call when the thread starts */        public void run() {           boolean draw = true;           FontMetrics fm;           Rectangle r;           int sw = 0;           int sa = 0;           int x  = 0;           int y  = 0;           setPriority(Thread.MIN_PRIORITY);                      while(true) {                if( newmessage != null && draw) {                    message = newmessage;                    newmessage = null;		}                if(lg == null) {                             lg = g2d.getGraphics();                  if(lg != null) lg = lg.create();	        }                if( lg != null) {                   if(f != null) lg.setFont(f);                   fm = lg.getFontMetrics(lg.getFont());                   sw = fm.stringWidth(message);                   sa = fm.getAscent();		} else {                   draw = false;		 }                if( draw ) {                      lg.setColor(foreground);                      r = g2d.bounds();                      x = r.x + (r.width-sw)/2;                      y = r.y + (r.height+sa)/2;                      lg.drawString(message, x, y);                                      g2d.repaint();                      try { sleep(visible); }                      catch(Exception e) { }	        } else {                      if(lg != null) {                         lg.setColor(g2d.getBackground());                         lg.drawString(message, x, y);                         g2d.repaint();		       }                       try { sleep(invisible); }                       catch(Exception e) { }		 }                draw = !draw;	      }	 }  /**   * Set the font the message will be displayed in   * @param f the font   */          public void setFont(Font f) {              this.f = f;          }  /**   *  The foreground color for the message   * @param c the foreground color   */          public void setForeground(Color c) {              if(c == null) return;              this.foreground = c;          }  /**   *   Set the message to be displayed   * @param s the message   */          public void setMessage(String s) {              if(s==null) return;              newmessage = s;          }}