public function getAxis()
    {
        if (null === $this->axis) {
            $this->axis[self::DIMENSION_X] = array();
            $this->axis[self::DIMENSION_Y] = array();
        }

        return $this->axis;
    }
public function getAxis()
    {
        if (null === $this->axis) {
            $this->axis[self::DIMENSION_X] = array();
            $this->axis[self::DIMENSION_Y] = array();
        }

        return $this->axis;
    }
public function getAxis ( ) { if ( null === $ this -> axis ) { $ this -> axis [ self :: DIMENSION_X ] = array ( ) ; $ this -> axis [ self :: DIMENSION_Y ] = array ( ) ; } return $ this -> axis ; }
Return axises in a 2D array.
Return axises in a 2D array .