  splitArea: {
                            show: true
                        }
                    },
                    yAxis: {
                        id: 'yy',
                        axisTick: {
                            show: false
                        },
                        splitArea: {
                            show: false
                        }
                    },
                    grid: {
                        left: 0,
                        top: 0,
                        