我使用Highcharts绘制带有动态数据的图表。
我找到了这个官方演示。http://jsfiddle.net/vn9bk80j/
$(function () {
$(document).ready(function () {
Highcharts.setOptions({
global: {
useUTC: false
}
});
$('#container').highcharts({
chart: {
type: 'spline',
animation: Highcharts.svg, // don't animate in old IE
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, false);
}, 1000);
}
}
},
title: {
text: 'Live random data'
},
xAxis: {
type: 'datetime',
tickPixelInterval: 150
},
yAxis: {
title: {
text: 'Value'
},
plotLines: [{
value: 0,
width: 1,
color: '#808080'
}]
},
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);
}
},
legend: {
enabled: false
},
exporting: {
enabled: false
},
series: [{
name: 'Random data',
data: []
}]
});
});
});
<script src="https://code.highcharts.com/highcharts.js"></script>
<script src="https://code.highcharts.com/modules/exporting.js"></script>
<div id="container" style="min-width: 310px; height: 400px; margin: 0 auto"></div>
Howerver,我需要修复图形窗口大小,此图形中的数据从一开始就从右向左移动。就像下面的图片
一样如何使用Highcharts获得图片2中的效果?
答案 0 :(得分:3)
您可以使用空点来创建空白空间,然后只需使用shift=true
添加品脱,请参阅:http://jsfiddle.net/vn9bk80j/1/
function getEmptyData() {
var interval = 1000, // 1 second,
numberOfPoints = 50,
now = (new Date()).getTime(),
min = now - interval * numberOfPoints,
points = [];
while (min <= now) {
points.push([min, null]); // set null points
min += interval;
}
return points;
}
方法用例:
series: [{
name: 'Random data',
data: getEmptyData()
}]
shift=true
示例:
series.addPoint([x, y], true, true);