void GraphicsLinesForCurve::lineMembershipReset ()
{
  LOG4CPP_INFO_S ((*mainCat)) << "GraphicsLinesForCurve::lineMembershipReset"
                              << " curve=" << m_curveName.toLatin1().data();

  OrdinalToGraphicsPoint::iterator itr;
  for (itr = m_graphicsPoints.begin(); itr != m_graphicsPoints.end(); itr++) {

    GraphicsPoint *point = itr.value();

    point->reset ();
  }
}