• Morris.js-利用JavaScript生成时序图


    morris.js是一个轻量级的时间序列javascript类库,是网页显示图表的好工具。github项目地址:点击打开,使用起来很简单,但是需要你有一点网页设计的一些基本知识,对一个网页内容的结构要有一定的了解。可以从项目地址下载下来,然后在网页的<head>标签内导入相应的js文件,类似这样的(注意你的目录路径):

      <script src="js/jquery.min.js"></script> 
      <script src="js/raphael-min.js"></script> 
      <script src="js/morris.min.js"></script> 

    具体使用的方法你可以参考官方给的范例,这里就不多说了,说下我遇到的问题,主要是我获取的到的信息的格式问题,morris.js加载的一条信息一般是这样的:

    ["year: '2007' ","value1:30","value2:15"]   ["year: '2008' ","value1:18","value2:20"]

    而我的数据是["year:'2007'", "year:'2009'"] ["value:30", "value:20"] ["value2:30", "value2:20"],对于一些数据量小的,到是无所谓可以用笨的方法,但是数据量太大的时候,就显的很麻烦了,应该这里讲的主要是数组的转置功能在javascript下的实现:

    先看自带的数据的现充:

    <!doctype html>
    <head>
      <script src="http://cdnjs.cloudflare.com/ajax/libs/jquery/2.0.3/jquery.min.js"></script>
      <script src="http://cdnjs.cloudflare.com/ajax/libs/raphael/2.1.2/raphael-min.js"></script>
      <script src="../morris.js"></script>
      <script src="http://cdnjs.cloudflare.com/ajax/libs/prettify/r224/prettify.min.js"></script>
      <script src="lib/example.js"></script>
      <link rel="stylesheet" href="lib/example.css">
      <link rel="stylesheet" href="http://cdnjs.cloudflare.com/ajax/libs/prettify/r224/prettify.min.css">
      <link rel="stylesheet" href="../morris.css">
    </head>
    <body>
    <h1>Formatting Dates YYYY</h1>
    <div id="graph"></div>
    <pre id="code" class="prettyprint linenums">
    /* data stolen from http://howmanyleft.co.uk/vehicle/jaguar_'e'_type */
    var year_data = [
      {"period": "2012", "licensed": 3407, "sorned": 660},
      {"period": "2011", "licensed": 3351, "sorned": 629},
      {"period": "2010", "licensed": 3269, "sorned": 618},
      {"period": "2009", "licensed": 3246, "sorned": 661},
      {"period": "2008", "licensed": 3257, "sorned": 667},
      {"period": "2007", "licensed": 3248, "sorned": 627},
      {"period": "2006", "licensed": 3171, "sorned": 660},
      {"period": "2005", "licensed": 3171, "sorned": 676},
      {"period": "2004", "licensed": 3201, "sorned": 656},
      {"period": "2003", "licensed": 3215, "sorned": 622}
    ];
    Morris.Line({
      element: 'graph',
      data: year_data,
      xkey: 'period',
      ykeys: ['licensed', 'sorned'],
      labels: ['Licensed', 'SORN']
    });
    </pre>
    </body>

    效果图:

    我实现的方式好像和上面还不一样,我的是在javascript中填充数据的,这个数据在量小的情况下可以满足需求,但是遇到我这种情况并且是大数量的话就必须自己写了:

    <!DOCTYPE html>
    <html>
     <head> 
      <link rel="stylesheet" href="css/morris.css" /> 
      <script src="js/jquery.min.js"></script> 
      <script src="js/raphael-min.js"></script> 
      <script src="js/morris.min.js"></script> 
      <script type="text/javascript">
          var   a   =   new   Array();//原来是3x2
          a[0]   =   new   Array("year:'2007'", "year:'2009'");//如果需要X坐标反置的话,用reverse()函数      
          a[1]   =   new   Array("value:30", "value:20");
          a[2]   =   new   Array("value2:30", "value2:20");
          var result=new Array();
          //创建二维数组,相当于a=[a[0],a[1]....]
         for (var j=0;j<a[0].length;j++) {//列的变化
                 result[j]=new Array();
              for (var i=0;i<a.length;i++) {//按<列>取值放入数组中
                  result[j].push(a[i][j]);//变量i为对应行数坐标
          }
          }
          //alert(a[0].length);
         $(document).ready(function () {
         var obj = new Object();
         var arr = [];
         for (var h=0;h<a[0].length;h++) {
             //var define = "{"+result[1].toString()+"}";
           obj[h] = eval('(' + "{"+result[a[0].length-h-1].toString()+"}" + ')');
           arr.push(obj[h])
         }
         //alert(arr.join());
             new Morris.Line({
      element: 'myfirstchart',
      data: arr,//注意这里的写的形式和原来的对比下
      xkey: 'year',
      ykeys: ['value','value2'],
      labels: ['Value','value2']
    });
      });
      </script> 
     </head> 
     <body> 
      <h1>Area charts</h1> 
      <div id="myfirstchart" style="height: 250px;"></div>  
     </body>
    </html>

    看看100个点的显示,我把pointsize值设置为0了,所以图上你看不出点,考虑到点太多所以就不显示了,但是监听鼠标弹出信息的功能还是有的:

      <link rel="stylesheet" href="${ctxStatic}/mystyles/js/mobile/morris.css">
        <script type="text/javascript"> 
            $(document).ready(function() {
            var data1 = new Array(),data2 = new Array(),data3 = new Array(),data4 = new Array(),data5 = new Array(),data6 = new Array(),data7 = new Array(),upload = new Array();
          $("span[id='deviceTem']").each(function(i){
            data1[i] = $(this).html();
          });
          $("span[id='temWater']").each(function(i){
            data2[i] = $(this).html();
          });
          $("span[id='ph']").each(function(i){
            data3[i] = $(this).html();
          });
          $("span[id='do']").each(function(i){
            data4[i] = $(this).html();
          });
          $("span[id='speed']").each(function(i){
            data5[i] = $(this).html();
          });
          $("span[id='pressure']").each(function(i){
            data6[i] = $(this).html();
          });
          $("span[id='air']").each(function(i){
            data7[i] = $(this).html();
          });
          $("span[id='time']").each(function(i){
            upload[i] = $(this).html();
          });
          var a = new Array(upload.reverse(),data1.reverse(),data2.reverse(),data3.reverse(),data4.reverse(),data5.reverse(),data6.reverse(),data7.reverse());
          var result=new Array();
          var temp = a[0].length;
          var temp2 = a.length;
          //创建二维数组,相当于a=[a[0],a[1]....]
         for (var j=0;j<temp;j++) {//列的变化
            result[j]=new Array();
            for (var i=0;i<temp2;i++) {//按<列>取值放入数组中
              result[j].push(a[i][j]);//变量i为对应行数坐标
          }
          }
         var obj = new Object();
         var arr = [];
         for (var h=0;h<temp;h++) {
          //var define = "{"+result[1].toString()+"}";
         obj[h] = eval('(' + "{"+result[h].toString()+"}" + ')');
         arr.push(obj[h]);
         }
          new Morris.Line({
            element: 'container',
            data: arr,
            xkey: 'time',
            ykeys: ['value1','value2','value3','value4','value5','value6','value7'],
            labels: ['水温','罐温','pH','DO','风速','压力','空气'],
            parseTime: false,//注意相关的属性
            pointSize: 0
          });
          //end  
              });
        </script>
    View Code
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  • 原文地址:https://www.cnblogs.com/sowhat4999/p/4542181.html
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