Highcharts数组:

时间:2011-11-20 00:14:02

标签: javascript json highcharts

我只是在基于rails 3.1.1和HAML的测试应用程序中使用Highcharts(http://www.highcharts.com)。我还是js的新手,我试图完成高级图表的良好集成。

在我的控制器中,我设置了一些json数组,以便在highcharts中使用。

@category_ids_json = Category.all(:conditions => { :income => false},:select => "id").to_json
@categories_json = Category.all(:conditions => { :income => false}, :select => "id,title,income").to_json
@transactions_json = Transaction.all(:select => "date,title,amount,category_id").to_json

在这些实例变量中,我过滤了一些值并创建了一个新数组,我将其用于highcharts数据数组:

var category_transactions_sum = new Array();
category_transactions_sum.push({title:categories[c].title, amount: transactions_sum})

数组的内容看起来像这样:

[{title: "Salary", amount: 50},{title: "Food", amount: 25},{title: "Recreation", amount: 10}]

现在是时候初始化Highcharts了。这就是我现在初始化它的方式:

$(document).ready(function() {
 chart = new Highcharts.Chart({
    chart: {
       renderTo: 'container'
    },
     series: [{
       type: 'pie',
       name: 'Expenses',
       data: [
          [category_transactions_sum[0].title, category_transactions_sum[0].amount],
          [category_transactions_sum[1].title, category_transactions_sum[1].amount],
          [category_transactions_sum[2].title, category_transactions_sum[2].amount],
          [category_transactions_sum[3].title, category_transactions_sum[3].amount],
          [category_transactions_sum[4].title, category_transactions_sum[4].amount],
          [category_transactions_sum[5].title, category_transactions_sum[5].amount],
          [category_transactions_sum[6].title, category_transactions_sum[6].amount],
          [category_transactions_sum[7].title, category_transactions_sum[7].amount],
          [category_transactions_sum[8].title, category_transactions_sum[8].amount],
          [category_transactions_sum[9].title, category_transactions_sum[9].amount],
          [category_transactions_sum[10].title, category_transactions_sum[10].amount],
          [category_transactions_sum[11].title, category_transactions_sum[11].amount],
          [category_transactions_sum[12].title, category_transactions_sum[12].amount],
          [category_transactions_sum[13].title, category_transactions_sum[13].amount],
          [category_transactions_sum[14].title, category_transactions_sum[14].amount],
          [category_transactions_sum[15].title, category_transactions_sum[15].amount],
          [category_transactions_sum[16].title, category_transactions_sum[16].amount],
          [category_transactions_sum[17].title, category_transactions_sum[17].amount],
          [category_transactions_sum[18].title, category_transactions_sum[18].amount],
          [category_transactions_sum[19].title, category_transactions_sum[19].amount],
          [category_transactions_sum[20].title, category_transactions_sum[20].amount],
          [category_transactions_sum[21].title, category_transactions_sum[21].amount],
          [category_transactions_sum[22].title, category_transactions_sum[22].amount],
          [category_transactions_sum[23].title, category_transactions_sum[23].amount],
          [category_transactions_sum[24].title, category_transactions_sum[24].amount],
          [category_transactions_sum[25].title, category_transactions_sum[25].amount],
          [category_transactions_sum[26].title, category_transactions_sum[26].amount],
       ]
    }]
 });

我的问题:

  1. 我如何遍历category_transactions_sum数组以摆脱highcharts的“data”声明中的那一行。我试过一个for循环,但它不起作用。

  2. 有没有更好的方法将数据插入highcharts? Highcharts需要这种格式的数据:

    数据:[ ['Firefox',45.0], ['IE',26.8], ['Safari',8.5], ['Opera',6.2], ['其他人',0.7] ]

  3. 是否可以做这样的事情?

    data: [
      myArrayWithPreparedData
    ]
    

    如果是,我将如何构建这个数组?

    非常感谢帮助新手。

3 个答案:

答案 0 :(得分:1)

我相信你想要这样的东西:

data: $.map(category_transactions_sum, function(i, c) { return [c.title, c.amount]; })

答案 1 :(得分:1)

你可以尝试这个(适合我):

temp = $.map(json, function(i) { return [[i.in_time, i.status]]; })         
showData = JSON.parse(JSON.stringify(temp, null, ""));

然后在系列中使用:

chart.addSeries({
    data: showData
}); 

答案 2 :(得分:0)

亚历克斯几乎拥有它。

应该是:

someVar = [{title: "Salary", amount: 50},{title: "Food", amount: 25},{title: "Recreation", amount: 10}]
data = $.map(someVar, function(i) { return [[i.title, i.amount]]; })
$(document).ready(function() {
 chart = new Highcharts.Chart({
    chart: {
       renderTo: 'container'
    },
     series: [{
       type: 'pie',
       name: 'Expenses',
       data: data
    }]
 });