: {
                    data: ['no point', 'one point', 'two points'],
                    selectedMode: 'single'
                },
                tooltip: {
                    trigger: 'axis',
                    axisPointer: {
                        type: 'line'
                    }
                },
                xAxis: {
                    type: 'time',
                    min: function (value) {
                        return value.min - 20 * 24 * 3600 * 1000;
                    },
          