public void init(){
  initOriginEnd();
  setSlicing();
  if (gridVisible) {
    setLightLines();
    setLightLabels();
  }
}

public void init ( ) { initOriginEnd ( ) ; setSlicing ( ) ; if ( gridVisible ) { setLightLines ( ) ; setLightLabels ( ) ; } }
sets the axis to its default initial value .
