if (m_JitterVal != 0) { updatePturb(); }
  public void setYindex(int y) {    m_yIndex = y;    for (int i=0;i<m_plots.size();i++) {      ((PlotData2D)m_plots.elementAt(i)).setYindex(m_yIndex);    }    determineBounds();    m_axisChanged = true;    this.repaint();  }