This JSFiddle demo显示了Highcharts明细的示例。当您单击图表中的某列时,系列将替换为与单击的列对应的向下钻取系列
drilldown: {
series: [{
id: 'animals',
data: [
['Cats', 4],
['Dogs', 2],
['Cows', 1],
['Sheep', 2],
['Pigs', 1]
]
}, {
id: 'fruits',
data: [
['Apples', 4],
['Oranges', 2]
]
}, {
id: 'cars',
data: [
['Toyota', 4],
['Opel', 2],
['Volkswagen', 2]
]
}]
}
例如,如果单击fruits列,将显示此数据
data: [
['Apples', 4],
['Oranges', 2]
]
请注意,必须预先创建所有钻取系列。在这种特殊情况下,只有3个向下钻系列,所以这不是一个大问题。但是,在我的情况下,大约有30个向下钻取系列,并且创建每个系列需要执行一些查询。有没有办法让钻取系列延迟加载,即钻取系列数据仅在用户点击其中一列时请求?
答案 0 :(得分:6)
对于这种功能级别,我只是继续自己创建它。使用point.events.click
回调进行ajax调用并替换系列:
plotOptions: {
series: {
point: {
events: {
click: function(event) {
var chart = this.series.chart;
var name = this.name;
$.ajax({
url: name + ".json",
success: function(data) {
swapSeries(chart,name,data);
},
dataType: "json"
});
}
}
}
}
},
swapSeries
的位置:
function swapSeries(chart, name, data) {
chart.series[0].remove();
chart.addSeries({
data: data,
name: name,
colorByPoint: true
});
}
这是一个有效的example。
答案 1 :(得分:6)
Highcharts支持Lazy drilldown ,但它使用术语“async drilldown”。
$(function() {
// Create the chart
$('#container').highcharts({
chart: {
type: 'column',
events: {
drilldown: function(e) {
if (!e.seriesOptions) {
var chart = this,
drilldowns = {
'Animals': {
name: 'Animals',
data: [
['Cows', 2],
['Sheep', 3]
]
},
'Fruits': {
name: 'Fruits',
data: [
['Apples', 5],
['Oranges', 7],
['Bananas', 2]
]
},
'Cars': {
name: 'Cars',
data: [
['Toyota', 1],
['Volkswagen', 2],
['Opel', 5]
]
}
},
series = drilldowns[e.point.name];
// Show the loading label
chart.showLoading('Simulating Ajax ...');
setTimeout(function() {
chart.hideLoading();
chart.addSeriesAsDrilldown(e.point, series);
}, 1000);
}
}
}
},
title: {
text: 'Async drilldown'
},
xAxis: {
type: 'category'
},
legend: {
enabled: false
},
plotOptions: {
series: {
borderWidth: 0,
dataLabels: {
enabled: true
}
}
},
series: [{
name: 'Things',
colorByPoint: true,
data: [{
name: 'Animals',
y: 5,
drilldown: true
}, {
name: 'Fruits',
y: 2,
drilldown: true
}, {
name: 'Cars',
y: 4,
drilldown: true
}]
}],
drilldown: {
series: []
}
});
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<script src="http://code.highcharts.com/highcharts.js"></script>
<script src="http://code.highcharts.com/modules/drilldown.js"></script>
<div id="container" style="min-width: 310px; height: 400px; margin: 0 auto"></div>