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Highcharts 動態(tài)圖
2018-09-22 14:52 更新
Highcharts 動態(tài)圖
本章節(jié)我們將為大家介紹 Highcharts 的動態(tài)圖。
我們在前面的章節(jié)已經(jīng)了解了 Highcharts 配置語法。接下來讓我們來看下 Highcharts 的其他配置。
每秒更新曲線圖
chart.events
chart.event 屬性中添加 load 方法（圖表加載事件）。在 1000 毫秒內(nèi)隨機產(chǎn)生數(shù)據(jù)點并生成圖表。
chart: {
events: {
load: function () {
// 圖表每秒更新一次
var series = this.series[0];
setInterval(function () {
var x = (new Date()).getTime(), // 當期時間
y = Math.random();
series.addPoint([x, y], true, true);
}, 1000);
}
}
}
實例
文件名：highcharts_dynamic_spline.htm
<html>
<head>
<title>Highcharts 教程 | W3Cschool教程(w3cschool.cn)</title>
<script src="http://apps.bdimg.com/libs/jquery/2.1.4/jquery.min.js" rel="external nofollow" rel="external nofollow" ></script>
<script src="/try/demo_source/highcharts.js"></script>
</head>
<body>
<div id="container" style="width: 550px; height: 400px; margin: 0 auto"></div>
<script language="JavaScript">
$(document).ready(function() {
var chart = {
type: 'spline',
animation: Highcharts.svg, // don't animate in IE < IE 10. marginRight: 10, events: { load: function () { // set up the updating of the chart each second var series = this.series[0]; setInterval(function () { var x = (new Date()).getTime(), // current time y = Math.random(); series.addPoint([x, y], true, true); }, 1000); } } }; var title = { text: 'Live random data' }; var xAxis = { type: 'datetime', tickPixelInterval: 150 }; var yAxis = { title: { text: 'Value' }, plotLines: [{ value: 0, width: 1, color: '#808080' }] }; var tooltip = { formatter: function () { return '<b>' + this.series.name + '</b><br/>' +
Highcharts.dateFormat('%Y-%m-%d %H:%M:%S', this.x) + '<br/>' +
Highcharts.numberFormat(this.y, 2);
}
};
var plotOptions = {
area: {
pointStart: 1940,
marker: {
enabled: false,
symbol: 'circle',
radius: 2,
states: {
hover: {
enabled: true
}
}
}
}
};
var legend = {
enabled: false
};
var exporting = {
enabled: false
};
var series= [{
name: 'Random data',
data: (function () {
// generate an array of random data
var data = [],time = (new Date()).getTime(),i;
for (i = -19; i <= 0; i += 1) { data.push({ x: time + i * 1000, y: Math.random() }); } return data; }()) }]; var json = {}; json.chart = chart; json.title = title; json.tooltip = tooltip; json.xAxis = xAxis; json.yAxis = yAxis; json.legend = legend; json.exporting = exporting; json.series = series; json.plotOptions = plotOptions; Highcharts.setOptions({ global: { useUTC: false } }); $('#container').highcharts(json); }); </script>
</body>
</html>
以上實例輸出結(jié)果為：
Highcharts 餅圖通過點擊添加數(shù)據(jù)
chart.events
在 chart.event 屬性中添加 click 方法（整個圖表的繪圖區(qū)上所發(fā)生的點擊事件）。該方法在圖表繪圖區(qū)上發(fā)生點擊時會添加新的數(shù)據(jù)點。
chart: {
events: {
click: function (e) {
// 獲取點擊坐標和數(shù)據(jù)項
var x = e.xAxis[0].value,
y = e.yAxis[0].value,
series = this.series[0];
// 添加點擊的坐標
series.addPoint([x, y]);
}
}
}
實例
文件名：highcharts_dynamic_click.htm
<html>
<head>
<title>Highcharts 教程 | W3Cschool教程(w3cschool.cn)</title>
<script src="http://apps.bdimg.com/libs/jquery/2.1.4/jquery.min.js" rel="external nofollow" rel="external nofollow" ></script>
<script src="/try/demo_source/highcharts.js"></script>
</head>
<body>
<div id="container" style="width: 550px; height: 400px; margin: 0 auto"></div>
<script language="JavaScript">
$(document).ready(function() {
var chart = {
type: 'scatter',
margin: [70, 50, 60, 80],
events: {
click: function (e) {
// find the clicked values and the series
var x = e.xAxis[0].value,
y = e.yAxis[0].value,
series = this.series[0];
// Add it
series.addPoint([x, y]);
}
}
};
var title = {
text: 'User supplied data'
};
var subtitle = {
text: 'Click the plot area to add a point. Click a point to remove it.'
};
var xAxis = {
gridLineWidth: 1,
minPadding: 0.2,
maxPadding: 0.2,
maxZoom: 60
};
var yAxis = {
title: {
text: 'Value'
},
minPadding: 0.2,
maxPadding: 0.2,
maxZoom: 60,
plotLines: [{
value: 0,
width: 1,
color: '#808080'
}]
};
var legend = {
enabled: false
};
var exporting = {
enabled: false
};
var plotOptions = {
series: {
lineWidth: 1,
point: {
events: {
'click': function () {
if (this.series.data.length > 1) {
this.remove();
}
}
}
}
}
};
var series= [{
data: [[20, 20], [80, 80]]
}];
var json = {};
json.chart = chart;
json.title = title;
json.subtitle = subtitle;
json.xAxis = xAxis;
json.yAxis = yAxis;
json.legend = legend;
json.exporting = exporting;
json.series = series;
json.plotOptions = plotOptions;
$('#container').highcharts(json);
});
</script>
</body>
</html>
以上實例輸出結(jié)果為：
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