         show: !!xShow,
                            data: x,
                            levels: xLevels ? xLevels : undefined,
                            itemStyle: {color: '#111'},
                            label: {color: '#eee'},
                        },
                        y: {
                            show: !!yShow,
                            data: y,
                            levels: yLevels ? yLevels : undefined,
                            itemStyle: {color: '#111'},
                 