javascript-C3.js从CSV排除列

我正在通过从提供的CSV文件加载数据来使用C3.JS创建多系列折线图.我可以绘制图形,但是我还没有发现是否可以仅绘制CSV中的某些列,我的图形正在绘制所有CSV列.

我的CSV如下所示：

Sex,Age,L,M,S,P3,P5,P10,P25,P50,P75,P90,P95,P97
2,0,-1.298749689,34.7115617,0.046905108,31.93019666,32.25089861,32.75948527,33.65186554,34.7115617,35.85124044,36.9534983,37.65137722,38.12110271
2,0.5,-1.440271514,36.03453876,0.042999604,33.38070525,33.68743507,34.17345861,35.02508397,36.03453876,37.11806755,38.16405088,38.82535049,39.27005698
2,1.5,-1.581016348,37.97671987,0.038067862,35.48627093,35.77560367,36.23325692,37.03281566,37.97671987,38.9853304,39.95458524,40.56517149,40.97482424
2,2.5,-1.593136386,39.3801263,0.035079612,36.98550023,37.26521982,37.70685493,38.47603153,39.3801263,40.34145495,41.2606303,41.83732218,42.22321458

而I仅绘制以年龄为X轴的百分位数(P *列)列的线,并从图中不绘制Sex,L,M和S列.

目前,我的图形如下所示：

一种解决方案是从CSV文件中删除列,但是这是不可能的,因为我将需要其他值来进行其他计算,并且我希望将所有数据保留在一个文件中.

我的C3.js代码如下所示：

var chart = c3.generate({
    data: {
                x: 'Age',
        url: '/data/cdc/cdc_female_hcageinf.csv',
                type: 'line'

        },
    tooltip: {
        show: false
    },
            point: {
        show: false
    }
});

我不确定是否有c3.js配置或方法来执行此操作,否则将需要javascript方法.

解决方法:

受@Armani的启发,我最终完成了此操作,这是将d3.csv函数与c3结合使用的方法,因为我找不到使用c3 URL的方法.

>首先,我使用D3将CSV文件加载到JSON对象中
>根据需要修改数据(不过滤)
>给C3提供json对象
>使用c3调用内的“ keys”属性仅显示我想要的字段.

d3.csv( _dataPath, function ( d ) {

  var data = d;

  if ( configdata.axis.x.source_units == "meses" && configdata.axis.x.units == "años" )
  {
    data[ configdata.axis.x.property_key ] = data[ configdata.axis.x.property_key ] / 12;
  }

  return data;

}, function( error, data ) {

  if (!error)
  {

    var percentiles = [];
    configdata.percentilesData.forEach( function( p ) {
      percentiles.push( p.name );
    });

    var x_axis_label = configdata.axis.x.label + ' (' + configdata.axis.x.units + ')';
    var y_axis_label = configdata.axis.y.label + ' (' + configdata.axis.y.units + ')';

    var chart = c3.generate({
      bindto: '#chart',
      data: {
        json: data,
        type: 'line',
        keys: {
          x: configdata.axis.x.property_key,
          value: percentiles
        }
      },
      axis: {
        y: {
          label: y_axis_label
        },
        x: {
          label: x_axis_label
        }
      },
      tooltip: {
        show: false
      },
      point: {
        show: false
      }
    });

  }
});

<script src="https://cdnjs.cloudflare.com/ajax/libs/d3/3.4.11/d3.min.js"></script>

标签：d3-js,graph,c3-js,javascript
来源： https://codeday.me/bug/20191029/1956865.html