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