public WeightMatrixViewer(List<Neuron> sourceList,List<Neuron> targetList,NetworkPanel panel){
  init(sourceList,targetList,panel);
}

public WeightMatrixViewer ( List < Neuron > sourceList , List < Neuron > targetList , NetworkPanel panel ) { init ( sourceList , targetList , panel ) ; }
construct a weight matrix viewer using a specified list of source and target neurons .
