javascript - C3 条形图，条数未知

Question

我正在使用 C3.js 创建条形图。

我的情况是这样的:

我想收集 X 数量的数据并将它们显示在我的图表中，为此我创建了以下脚本:

    $.ajax({
    type: 'POST',
    url: '/AcademyStat/academy_module_user_report',
    dataType: 'json',
    data: {
        request: 'ajax',
        team_id: team_id,
        module_id: module_id
    },
    success: function (data)
    {
        if(data != null)
        {
            for (var i = 0; i < data.length; i++)
            {
                var add_data = [data[i]['name'], data[i]['score']]
                char_data.push(add_data);
            }
            var chart = c3.generate({
                bindto: '#score_chart',
                data: {
                    columns: [
                        char_data

                    ],
                    type: 'bar'
                }
            });
        }
    }
});

正如您从上面的示例中看到的，我循环遍历数据，然后将其添加到数组中，直到我有一个数组的数组(未知数量的数据)。

但是，当我在浏览器中运行此命令时，我在控制台中收到以下错误:

    Error: Invalid value for <path> attribute d="M 286.6,NaN L286.6,NaN L531.4,NaN L531.4,NaN z" d3.min.js:5
Error: Invalid value for <path> attribute d="M 1102.6,NaN L1102.6,NaN L1347.3999999999999,NaN L1347.3999999999999,NaN z" d3.min.js:5
Error: Invalid value for <path> attribute d="M 286.6,NaN L286.6,NaN L531.4,NaN L531.4,NaN z" d3.min.js:5
Error: Invalid value for <path> attribute d="M 1102.6,NaN L1102.6,NaN L1347.3999999999999,NaN L1347.3999999999999,NaN z" d3.min.js:5
Error: Invalid value for <path> attribute d="M 286.6,NaN L286.6,NaN L531.4,NaN L531.4,NaN z" d3.min.js:5
Error: Invalid value for <path> attribute d="M 1102.6,NaN L1102.6,NaN L1347.3999999999999,NaN L1347.3999999999999,NaN z" d3.min.js:5
Error: Invalid value for <path> attribute d="M 286.6,NaN L286.6,NaN L531.4,NaN L531.4,NaN z" d3.min.js:5
Error: Invalid value for <path> attribute d="M 1102.6,NaN L1102.6,NaN L1347.3999999999999,NaN L1347.3999999999999,NaN z" d3.min.js:5
Error: Invalid value for <path> attribute d="M 286.6,NaN L286.6,NaN L531.4,NaN L531.4,NaN z" d3.min.js:5
Error: Invalid value for <path> attribute d="M 1102.6,NaN L1102.6,NaN L1347.3999999999999,NaN L1347.3999999999999,NaN z" d3.min.js:5
Error: Invalid value for <path> attribute d="M 286.6,NaN L286.6,NaN L531.4,NaN L531.4,NaN z" d3.min.js:5
Error: Invalid value for <path> attribute d="M 1102.6,NaN L1102.6,NaN L1347.3999999999999,NaN L1347.3999999999999,NaN z" d3.min.js:5
Error: Invalid value for <path> attribute d="M 286.6,NaN L286.6,NaN L531.4,NaN L531.4,NaN z" d3.min.js:5
Error: Invalid value for <path> attribute d="M 1102.6,NaN L1102.6,NaN L1347.3999999999999,NaN L1347.3999999999999,NaN z" d3.min.js:5
Error: Invalid value for <path> attribute d="M 286.6,NaN L286.6,NaN L531.4,NaN L531.4,NaN z" d3.min.js:5
Error: Invalid value for <path> attribute d="M 1102.6,NaN L1102.6,NaN L1347.3999999999999,NaN L1347.3999999999999,NaN z" d3.min.js:5
Error: Invalid value for <path> attribute d="M 286.6,NaN L286.6,NaN L531.4,NaN L531.4,NaN z" d3.min.js:5
Error: Invalid value for <path> attribute d="M 1102.6,NaN L1102.6,NaN L1347.3999999999999,NaN L1347.3999999999999,NaN z" d3.min.js:5
Error: Invalid value for <path> attribute d="M 286.6,NaN L286.6,NaN L531.4,NaN L531.4,NaN z" d3.min.js:5
Error: Invalid value for <path> attribute d="M 1102.6,NaN L1102.6,NaN L1347.3999999999999,NaN L1347.3999999999999,NaN z" d3.min.js:5
Error: Invalid value for <path> attribute d="M 286.6,NaN L286.6,NaN L531.4,NaN L531.4,NaN z" d3.min.js:5
Error: Invalid value for <path> attribute d="M 1102.6,NaN L1102.6,NaN L1347.3999999999999,NaN L1347.3999999999999,NaN z

但是，如果我改为使用方法 pop 数据显示正常。 pop(); 的唯一问题是我必须知道我的 char_data 数组有多少个数组，但我不可能知道。

有人尝试过类似的方法或者知道我如何解决这个问题吗？

Answer 1

看起来您正在将图表columns设置为数组内的数组columns: [ [ ['name', 'score'] ] ]

将列:[ char_data ]更改为列:char_data

$.ajax({
    type: 'POST',
    url: '/AcademyStat/academy_module_user_report',
    dataType: 'json',
    data: {
        request: 'ajax',
        team_id: team_id,
        module_id: module_id
    },
    success: function (data) {
        if (data != null) {
            for (var i = 0; i < data.length; i++) {
                var add_data = [data[i]['name'], data[i]['score']]
                char_data.push(add_data);
            }
            var chart = c3.generate({
                bindto: '#score_chart',
                data: {
                    columns: char_data,
                    type: 'bar'
                }
            });
        }
    }
});