如何修改Highcharts x轴工具提示文本

Question

如何修改x轴工具提示值？我想添加一个前缀并将值除以1000.在此示例中，x轴数据以毫秒为单位，但我希望以秒为单位显示2位小数。我可以使用格式化程序功能来更改x轴标签，但不会看到如何更改工具提示。

Answer 1

要添加后缀，您可以使用headerFormat，例如：

headerFormat: '<span style="font-size: 10px"> {point.key}s </span><br/>'

但是既然你想在那里做分工，你需要用formatter函数完全控制：

    tooltip: {
        formatter: function(d){
            var rV = (this.x / 1000).toFixed(2)  + "s <br/>";
            rV += '<span style="color:' + this.point.color + '">\u25CF</span> ' + this.series.name + ': <b> ' + this.y + '</b><br/>';
            return rV;
        }
    },

这是一个有效的例子：

$(function () {
    $('#container').highcharts({

        tooltip: {
            formatter: function(d){
                var rV = (this.x / 1000).toFixed(2)  + "s <br/>";
                rV += '<span style="color:' + this.point.color + '">\u25CF</span> ' + this.series.name + ': <b> ' + this.y + '</b><br/>';
                return rV;
			}
        },

        series: [{
            name: 'Short',
            data: [[1.23 * 1000, Math.random() * 10], [2.343 * 1000, Math.random() * 10],[3.343 * 1000, Math.random() * 10],[4.343 * 1000, Math.random() * 10],[5.343 * 1000, Math.random() * 10]]
        }]
    });
});

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<script src="https://code.highcharts.com/highcharts.js"></script>
<div id="container" style="height: 300px"></div>

<强> EDITS

以下是fiddle的更新版本。

对于多个系列，您需要共享工具提示并循环点对象：

   tooltip: {
        formatter: function(d){
            var rV = (this.x / 1000).toFixed(2)  + "s <br/>";
            this.points.forEach(function(d){
              rV += '<span style="color:' + d.color + '">\u25CF</span> ' + d.series.name + ': <b> ' + d.y + '</b><br/>';
            });                
            return rV;
        },
        shared: true
    },

完整的工作代码：

$(function () {
    $('#container').highcharts({
        chart: {
            zoomType: 'xy'
        },
        title: {
            text: 'Profile'
        },
        subtitle: {
            text: '(pressure & velocity vs. dispense time)'
        },
        xAxis: [{
            //categories: [0,48,98,150,200],
            //labels:{rotation:-45, step:0}
            title: {
                enabled: true,
                text: 'Seconds from start' //Seconds from start of Dispense				
            },
            name: 'test',
            labels: {
                formatter: function () {
                    return Highcharts.numberFormat(this.value / 1000, 3);
                }
            },
            crosshair: true
        }],
        yAxis: [{ // Primary yAxis
            labels: {
                formatter: function () {
                    return this.value + ' PSI';
                },
                style: {
                    color: '#4572A7'
                }
            },
            title: {
                text: 'Pressure',
                style: {
                    color: '#4572A7'
                }
            },
            opposite: false

        }, { // Secondary yAxis
            gridLineWidth: 0,
            title: {
                text: 'Vel', //Pallet 
                style: {
                    color: '#89A54E'
                }
            },
            labels: {
                formatter: function () {
                    return this.value + ' mm/s';
                },
                style: {
                    color: '#89A54E'
                }
            },
            opposite: true
        }],
        tooltip: {
            shared: true,
            formatter: function(d){
                var rV = (this.x / 1000).toFixed(2)  + "s <br/>";
                this.points.forEach(function(d,i){
                  rV += '<span style="color:' + d.color + '">\u25CF</span> ' + d.series.name + ': <b> ' + d.y;
                  if (i === 0){
                      rV += ' PSI';
                  } else {
                      rV += ' mm/s';
                  }
                  rV += '</b><br/>';
                });                
                return rV;
			},
            valueDecimals: 4,
        },
        plotOptions: {
            spline: {
                marker: {
                    radius: 1,
                }
            }
        },
        legend: {
            layout: 'vertical',
            align: 'left',
            x: 100,
            verticalAlign: 'top',
            y: 20,
            floating: true,
            backgroundColor: '#FFFFFF'
        },
        series: [{
            name: 'PSI',
            color: '#4572A7',
            yAxis: 0,
            data: [
                [0, -8.527222],
                [48, -8.19928],
                [98, -8.19928],
                [150, -8.19928],
                [200, -8.19928]
            ],
            tooltip: {
                valueSuffix: ' PSI'
            },
            marker: {
                radius: 2
            }

        }, {
            name: 'Vel',
            color: '#89A54E',
            yAxis: 1,
            data: [
                [0, 5.376344E-02],
                [48, -5.376344E-02],
                [98, -1.075269E-01],
                [150, 0],
                [200, -2.688172E-01]
            ],
            tooltip: {
                valueSuffix: ' mm/s'
            },
            marker: {
                radius: 2
            }
        }, {
            name: 'Vel',
            color: '#29A54E',
            yAxis: 1,
            data: [
                [0, -0],
                [48, 4.032258E-01],
                [98, -0],
                [150, 4.032258E-01],
                [200, -4.032258E-01]
            ],
            tooltip: {
                valueSuffix: ' mm/s'
            },
            marker: {
                radius: 2
            }
        }]
    });
});

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<script src="https://code.highcharts.com/highcharts.js"></script>
<div id="container" style="height: 300px"></div>