根据我从这个网站得到的公式,我试图计算一个趋势线:
http://classroom.synonym.com/calculate-trendline-2709.html
我通过添加代码并动态传递值来完成High Charts中的趋势线,这是我的代码:
<!DOCTYPE HTML>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>Highcharts Example</title>
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.8.2/jquery.min.js"></script>
<script type="text/javascript" src="regression.js"></script>
<script type="text/javascript" src="http://code.highcharts.com/highcharts.js"></script>
<script type="text/javascript">
$(function () {
var sourceData = [
[0, 99.75], [1, 99.77],
[2, 99.78], [3, 99.84],
[4, 99.82], [5, 99.82],
[6, 99.76], [7, 99.78],
[8, 99.8], [9, 99.65],
[10, 99.94], [11, 99.8]
];
$('#container').highcharts({
title: {
text: 'RNA',
x: -20 //center
},
subtitle: {
text: 'Outage Reasons',
x: -20
},
xAxis: {
categories: ['18-Jul-14', '19-Jul-14', '20-Jul-14', '21-Jul-14', '22-Jul-14', '23-Jul-14',
'24-Jul-14', '25-Jul-14', '26-Jul-14', '27-Jul-14', '28-Jul-14', '29-Jul-14']
},
yAxis: {
title: {
text: 'Percent'
},
plotLines: [{
value: 0,
width: 1,
color: '#808080'
}]
},
tooltip: {
valueSuffix: '%'
},
legend: {
layout: 'vertical',
//align: 'right',
//verticalAlign: 'middle',
borderWidth: 0
},
series: [{
name: 'RNA - CP ( Radio Network Availability - Customer Perceived)',
data: sourceData
},
{
type: 'line',
marker: { enabled: false },
/* function returns data for trend-line */
data: (function() {
return fitData(sourceData).data;
})()
}],
credits: {
enabled: false
}
});
});
</script>
</head>
<body>
<script src="exporting.js"></script>
<div id="container" style="min-width: 310px; height: 400px; margin: 0 auto"></div>
</body>
</html>
这是生成的图表:
我想知道的是:
值如何根据公式计算值以及值是什么
趋势线如何在图表上绘图。
我知道x轴上的日期不能用公式计算。
我已经根据值
进行了计算 [0,99.75],[1,99.77],
[2,99.78],[3,99.84],
[4,99.82],[5,99.82],
[6,99.76],[7,99.78],
[8,99.8],[9,99.65],
[10,99.94],[11,99.8]
但是图表上绘制的值不同。
谢谢