jqPlot 的 JSON [英] JSON for jqPlot

问题描述

我想使用 jqPlot 使用来自服务器端的 JSON 数据，如本例中所述:http://www.jqplot.com/tests/data-renderers.php

I would like to use jqPlot usinge data from server side coming in JSON, like described in this example: http://www.jqplot.com/tests/data-renderers.php

我的代码与示例几乎相同:

My code is nearly the same like the example:

function myGraph(jsonurl) {

  var ajaxDataRenderer = function(url, plot, options) {
    var ret = null;
    $.ajax({
      // have to use synchronous here, else the function
      // will return before the data is fetched
      async: false,
      url: url,
      dataType:"json",
      success: function(data) {
        ret=data;
        console.warn(data);
      }
    });
    return ret;
  };



var plot1 = $.jqplot('chartdiv', jsonurl, {
      title: 'myTitle',
      dataRenderer: ajaxDataRenderer,
      dataRendererOptions: {  unusedOptionalUrl: jsonurl    },
      series: [{
          label: 'myLabel',
          neighborThreshold: -1
      }],
      axes: {
          xaxis: {
              renderer: $.jqplot.DateAxisRenderer,
            //  min:'August 1, 2010 16:00:00',
              tickInterval: '2 months',
              tickOptions:{formatString:'%Y-%m-%d.%H:%M:%S'}
          },
          yaxis: {
              tickOptions:{formatString:'$%.2f'}
          }
      },
  });

在服务器端，我使用 PHP(和 Yii).该网页返回一个数组，该数组通过使用 CJSON::encode($resultArray);(此 Yii 函数传递给 PHP JSON 编码函数)编码为 JSON.PHP 脚本的结果如下所示:

On server side i'm using PHP (and Yii). The webpage returns an array, which is encoded to JSON by using CJSON::encode($resultArray); (this Yii function passed trough to the PHP JSON encode function). The Results from the PHP script lookes like that:

{"2011-04-25 14:46:40":2,"2011-04-26 14:46:40":3,"2011-04-27 14:46:40":5}

客户端的 Ajax 请求解决了这样的问题(来自 console.info(); 的输出)

The Ajax request on client side resolved something like this (output from console.info(); )

Object { 2011-04-25 14:46:40=2,  2011-04-26 14:46:40=3, ...}

可能，jqPlot 需要以下格式:

Probably, jqPlot expect the following format:

[[["2011-04-25 14:46:40":0],["2011-04-26 14:46:40",3],["2011-04-27 14:46:40",0]]]

我总是收到 error uncaught exception: [object Object]怎么了?有没有办法将对象转换为典型的数组形式?

All the time i get the error uncaught exception: [object Object] What is wrong? Is there a way to convert the object for to the typical array form?

谢谢

推荐答案

我有这样的事情.我有 2 个用于值和标签的数组.您应该从数组构造如下字符串.

I have something like this . I had 2 arrays for values,labels .You should construct string as below from arrays .

        $size = count($labels);

        for ($i = 0; $i < $size; $i++) {
            $result = $result . "['" . $labels[$i] . "'," . $values[$i] . "]";
            if($i != $size -1 ){
                $result = $result . ",";
            }
        }

或者如果你没有 2 个数组而只有这个字符串 {"2011-04-25 14:46:40":2,"2011-04-26 14:46:40":3,"2011-04-27 14:46:40":5} 你可以用 [ , } 用 ] 和 , 用 ],[ 替换 { .一个肮脏但快速的解决方案.

OR if you dont have 2 arrays and just have this string {"2011-04-25 14:46:40":2,"2011-04-26 14:46:40":3,"2011-04-27 14:46:40":5} you can replace { with [ , } with ] and , with ],[ . A dirty but quick solution .

在上面的代码之后，你可能需要在两边附加 '[' 和 ']' 并返回值.

After above code you might need to append '[' and ']' on both sides and return value.

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