Question

如何画Flot多轴图

Answer 1

　因为Flot不支持堆栈图,所以必须加入堆栈图的插件jquery.flot.stack.js,此范例会用到的档案清单如下.

　　
<script type="text/javascript" src="/js/jquery-1.8.3.min.js"></script>
<!--[if lte IE 8]><script language="javascript" type="text/javascript" src="/js/flot/excanvas.min.js"></script><![endif]-->
<script type="text/javascript" src="/js/flot/jquery.flot.js"></script>
<script type="text/javascript" src="/js/flot/jquery.flot.axislabels.js"></script>
<script type="text/javascript" src="/js/flot/jquery.flot.stack.js"></script>
<script type="text/javascript" src="/js/flot/jshashtable-2.1.js"></script>
<script type="text/javascript" src="/js/flot/jquery.numberformatter-1.2.3.min.js"></script>

　　接着我们将网站的DNS查询数据建立成如下的数组格式,因为我们是用时间格式数据,所以建立了一个gd()函式用来取得javascript timestamps.这个范例我们用了3笔资料,为了简化说明,我们这里只显示1笔数据出来,后面2笔资料格式都是一样的,数据格式程序代码如下.
　　
var data = [
[gd(2012, 1, 1), 208557], [gd(2012, 1, 2), 125068], [gd(2012, 1, 3), 931208], [gd(2012, 1, 4), 450040],
[gd(2012, 1, 5), 761180], [gd(2012, 1, 6), 744526], [gd(2012, 1, 7), 707095], [gd(2012, 1, 8), 601316],
[gd(2012, 1, 9), 187495], [gd(2012, 1, 10), 716189], [gd(2012, 1, 11), 587141], [gd(2012, 1, 12), 147266],
[gd(2012, 1, 13), 574670], [gd(2012, 1, 14), 175881], [gd(2012, 1, 15), 272519], [gd(2012, 1, 16), 211131],
[gd(2012, 1, 17), 637015], [gd(2012, 1, 18), 794050], [gd(2012, 1, 19), 399010], [gd(2012, 1, 20), 799942],
[gd(2012, 1, 21), 595768], [gd(2012, 1, 22), 717126], [gd(2012, 1, 23), 414923], [gd(2012, 1, 24), 462479],
[gd(2012, 1, 25), 674334], [gd(2012, 1, 26), 20312], [gd(2012, 1, 27), 675892], [gd(2012, 1, 28), 808655],
[gd(2012, 1, 29), 194543], [gd(2012, 1, 30), 664716], [gd(2012, 1, 31), 980720]
];

function gd(year, month, day) {
return new Date(year, month - 1, day).getTime();