$('#singleDepartment').highcharts({
                chart: {
                    type: 'line'
                },
                global: {
                    useUTC: false
                },
                xAxis: {
                    type: 'datetime',
                    dateTimeLabelFormats: {
                        millisecond: '%m-%d',
                        second: '%m-%d',
                        minute: '%m-%d',
                        hour: '%m-%d',
                        day: '%m-%d',
                        week: '%m-%d',
                        month: '%m-%d',
                        year: '%m-%d'
                    }
                },
                tooltip: {
                    shared: true,
                    crosshairs: true,
                    dateTimeLabelFormats: {
                        hour: "%m-%e %H:%M",
                        day: "%m-%e",
                        month: "%Y-%m",
                    },
                },
                yAxis: {
                    title: {
                        text: '总营业额'
                    }
                },
                series: result,
                plotOptions: {
                    spline: {
                        shadow: true,
                        animation: true,
                        lineWidth: 1
                    },
                    series: {
                        lineWidth: 4,
                        cursor: 'pointer',
                        events: {
                            click: function (event) {
                                singleDepartmentChart.destroy();
                                $('#singleDepartment').hide();
                                $('#container').show();
                                chart = InitContainerChart();
                                setTimeout(btn_Search(), 200);

                                //alert(event.point.x); // X轴值
                                //alert(this.data[event.point.x].y); // Y轴值
                            }
                        }
                    }
                },
                title: {
                    text: UserName + " " + clickName + ' 营业额分布情况',
                    x: -20 //center
                },
            }).highcharts();;
        });

  chart.renderer.image('../../Content/Images/SalePic/' + item + '.jpg', (i + 1) * 88, i*20 , 80, 80).add();
这样会有头像，但是如何计算 x轴 Y轴的距离呢？