public OntoSpreadController() throws ConceptNotFoundException{
createLenSet();
}
//Constant in all graphs
private void createLenSet() {
TranslateLens m_translateLens=new TranslateLens();
ZoomLens m_zoomLens= new ZoomLens();
RotateLens m_rotateLens= new RotateLens();
CursorLens m_cursorLens = new CursorLens();
TooltipLens m_tooltipLens = new TooltipLens();
LegendLens m_legendLens = new LegendLens();