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                # Highcharts 動態圖 本章節我們將為大家介紹 Highcharts 的動態圖。 我們在前面的章節已經了解了 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 毫秒內隨機產生數據點并生成圖表。 ``` 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 | 菜鳥教程(runoob.com)</title> <script src="http://apps.bdimg.com/libs/jquery/2.1.4/jquery.min.js"></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> ``` 以上實例輸出結果為: ![](https://box.kancloud.cn/2015-12-29_5682517d4adc6.png) ## 通過點擊添加數據 ### chart.events 在 chart.event 屬性中添加 click 方法(整個圖表的繪圖區上所發生的點擊事件)。該方法在圖表繪圖區上發生點擊時會添加新的數據點。 ``` chart: { events: { click: function (e) { // 獲取點擊坐標和數據項 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 | 菜鳥教程(runoob.com)</title> <script src="http://apps.bdimg.com/libs/jquery/2.1.4/jquery.min.js"></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> ``` 以上實例輸出結果為: ![](https://box.kancloud.cn/2015-12-29_5682517d589bf.png)
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