public boolean CheckLabels( double PTime, double PDist)
	// Label pruning strategy
	{
		if((PTime >= LabelTime1 && PDist >= LabelDist1)
		|| (PTime >= LabelTime2 && PDist >= LabelDist2)
		|| (PTime >= LabelTime3 && PDist >= LabelDist3)){
			return true;
		}
		return false;
	}