版权声明:本文为博主原创文章,未经博主允许不得转载。 https://blog.csdn.net/chengqiuming/article/details/85868977
一 代码
<html>
<head>
<meta charset="UTF-8" />
<title>Highcharts 音量表</title>
<script src="http://apps.bdimg.com/libs/jquery/2.1.4/jquery.min.js"></script>
<script src="http://code.highcharts.com/highcharts.js"></script>
<script src="http://code.highcharts.com/highcharts-more.js"></script>
</head>
<body>
<div id="container" style="width: 550px; height: 400px; margin: 0 auto"></div>
<script language="JavaScript">
$(document).ready(function() {
var chart = {
// 类型为测量图
type: 'gauge',
plotBorderWidth: 1,
plotBackgroundColor: {
linearGradient: { x1: 0, y1: 0, x2: 0, y2: 1 },
stops: [
[0, '#FFF4C6'],
[0.3, '#FFFFFF'],
[1, '#FFF4C6']
]
},
plotBackgroundImage: null,
height: 200
};
var credits = {
enabled: false
};
var title = {
text: '音量表(VU Meter)'
};
var pane = [{
startAngle: -45, // 开始度数
endAngle: 45, // 结束度数
background: null,
center: ['25%', '145%'],
size: 300
}, {
startAngle: -45, // 开始度数
endAngle: 45, // 结束度数
background: null,
center: ['75%', '145%'],
size: 300
}];
var yAxis = [{
min: -20,
max: 6,
minorTickPosition: 'outside',
tickPosition: 'outside',
labels: {
rotation: 'auto',
distance: 20
},
plotBands: [{
from: 0,
to: 6,
color: '#C02316',
innerRadius: '100%',
outerRadius: '105%'
}],
pane: 0,
title: {
text: 'VU<br/><span style="font-size:8px">Channel A</span>',
y: -40
}
}, {
min: -20,
max: 6,
minorTickPosition: 'outside',
tickPosition: 'outside',
labels: {
rotation: 'auto',
distance: 20
},
plotBands: [{
from: 0,
to: 6,
color: '#C02316',
innerRadius: '100%',
outerRadius: '105%'
}],
pane: 1,
title: {
text: 'VU<br/><span style="font-size:8px">Channel B</span>',
y: -40
}
}];
var plotOptions = {
gauge: {
dataLabels: {
enabled: false
},
dial: {
radius: '100%'
}
}
};
var series= [{
data: [-20], // 初始化数据
yAxis: 0
}, {
data: [-20], // 初始化数据
yAxis: 1
}];
var json = {};
json.chart = chart;
json.credits = credits;
json.title = title;
json.pane = pane;
json.yAxis = yAxis;
json.plotOptions = plotOptions;
json.series = series;
// 动态效果
var chartFunction = function (chart) {
setInterval(function () {
if (chart.series) { // the chart may be destroyed
var left = chart.series[0].points[0],
right = chart.series[1].points[0],
leftVal,
rightVal,
inc = (Math.random() - 0.5) * 3;
leftVal = left.y + inc;
rightVal = leftVal + inc / 3;
if (leftVal < -20 || leftVal > 6) {
leftVal = left.y - inc;
}
if (rightVal < -20 || rightVal > 6) {
rightVal = leftVal;
}
left.update(leftVal, false);
right.update(rightVal, false);
chart.redraw();
}
}, 500);
};
$('#container').highcharts(json, chartFunction);
});
</script>
</body>
</html>
二 运行结果