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<ol class="breadcrumb">
  <li>Components</li>
  <li>EchartsExempleComponent</li>
</ol>


    <ul class="nav nav-tabs" role="tablist">
        <li class="active">
            <a href="#infos" id="infos-tab" role="tab" data-toggle="tab">Infos</a>
        </li>
        <li>
            <a href="#source" role="tab" id="source-tab" data-toggle="tab">Source</a>
        </li>
    </ul>

    <div class="tab-content">
        <div class="tab-pane fade active in" id="infos"><p class="comment">
    <h3>File</h3>
</p>
<p class="comment">
    <code>src/modules/lesson/echarts-exemple/echarts-exemple.component.ts</code>
</p>


<section>
    <h3>Metadata</h3>
    <table class="table table-sm table-hover">
        <tbody>


            <tr>
                <td class="col-md-3">selector</td>
                <td class="col-md-9"><code>app-echarts-exemple</code></td>
            </tr>

            <tr>
                <td class="col-md-3">styleUrls</td>
                <td class="col-md-9"><code>echarts-exemple.component.scss</code></td>
            </tr>


            <tr>
                <td class="col-md-3">templateUrl</td>
                <td class="col-md-9"><code>echarts-exemple.component.html</code></td>
            </tr>


        </tbody>
    </table>
</section>


    <section>
        <h3 id="methods">Methods</h3>
            <table class="table table-sm table-bordered">
                <tbody>
                    <tr>
                        <td class="col-md-4">
                            <b><span class="modifier"></span> getWeightData</b>
                        </td>
                    </tr>
    
                    <tr>
                        <td class="col-md-4">
                                <span class="modifier-icon method fa fa-play ">
                                    <span class="fa fa-"></span>
                                </span>
                            <code>getWeightData()</code>
                        </td>
                    </tr>
    
                    <tr>
                        <td class="col-md-4">
                                <div class="io-description">
                                    <b>Returns: </b>    <code>any</code>
    
                                </div>
                        </td>
                    </tr>
                </tbody>
            </table>
            <table class="table table-sm table-bordered">
                <tbody>
                    <tr>
                        <td class="col-md-4">
                            <b><span class="modifier"></span> getHeightData</b>
                        </td>
                    </tr>
    
                    <tr>
                        <td class="col-md-4">
                                <span class="modifier-icon method fa fa-play ">
                                    <span class="fa fa-"></span>
                                </span>
                            <code>getHeightData()</code>
                        </td>
                    </tr>
    
                    <tr>
                        <td class="col-md-4">
                                <div class="io-description">
                                    <b>Returns: </b>    <code>any</code>
    
                                </div>
                        </td>
                    </tr>
                </tbody>
            </table>
            <table class="table table-sm table-bordered">
                <tbody>
                    <tr>
                        <td class="col-md-4">
                            <b><span class="modifier"></span> getDate</b>
                        </td>
                    </tr>
    
                    <tr>
                        <td class="col-md-4">
                                <span class="modifier-icon method fa fa-play ">
                                    <span class="fa fa-"></span>
                                </span>
                            <code>getDate()</code>
                        </td>
                    </tr>
    
                    <tr>
                        <td class="col-md-4">
                                <div class="io-description">
                                    <b>Returns: </b>    <code>any</code>
    
                                </div>
                        </td>
                    </tr>
                </tbody>
            </table>
            <table class="table table-sm table-bordered">
                <tbody>
                    <tr>
                        <td class="col-md-4">
                            <b><span class="modifier"></span> calculateBMI</b>
                        </td>
                    </tr>
    
                    <tr>
                        <td class="col-md-4">
                                <span class="modifier-icon method fa fa-play ">
                                    <span class="fa fa-"></span>
                                </span>
                            <code>calculateBMI()</code>
                        </td>
                    </tr>
    
                    <tr>
                        <td class="col-md-4">
                                <div class="io-description">
                                    <b>Returns: </b>    <code>any</code>
    
                                </div>
                        </td>
                    </tr>
                </tbody>
            </table>
    </section>

    <section>
        <h3 id="inputs">Properties</h3>
            <table class="table table-sm table-bordered">
                <tbody>
                    <tr>
                        <td class="col-md-4">
                            <b> BMI</b>
                        </td>
                    </tr>
                    <tr>
                        <td class="col-md-4">
                            <code>BMI:     <code>any</code>
    </bcode>
                        </td>
                    </tr>
                </tbody>
            </table>
            <table class="table table-sm table-bordered">
                <tbody>
                    <tr>
                        <td class="col-md-4">
                            <b> date</b>
                        </td>
                    </tr>
                    <tr>
                        <td class="col-md-4">
                            <code>date:     <code>any</code>
    </bcode>
                        </td>
                    </tr>
                </tbody>
            </table>
            <table class="table table-sm table-bordered">
                <tbody>
                    <tr>
                        <td class="col-md-4">
                            <b> heightData</b>
                        </td>
                    </tr>
                    <tr>
                        <td class="col-md-4">
                            <code>heightData:     <code>any</code>
    </bcode>
                        </td>
                    </tr>
                </tbody>
            </table>
            <table class="table table-sm table-bordered">
                <tbody>
                    <tr>
                        <td class="col-md-4">
                            <b> weightData</b>
                        </td>
                    </tr>
                    <tr>
                        <td class="col-md-4">
                            <code>weightData:     <code>any</code>
    </bcode>
                        </td>
                    </tr>
                </tbody>
            </table>
    </section>
</div>
        <div class="tab-pane fade tab-source-code" id="source">
            <pre><code class="hljs javascript">import * as echarts from &#x27;echarts&#x27;;
import { AfterViewInit, Component } from &#x27;@angular/core&#x27;;
import * as Parse from &quot;parse&quot;
(Parse as any).serverURL &#x3D; &quot;http://metapunk.cn:9999/parse&quot;
Parse.initialize(&quot;dev&quot;)
@Component({
  selector: &#x27;app-echarts-exemple&#x27;,
  templateUrl: &#x27;./echarts-exemple.component.html&#x27;,
  styleUrls: [&#x27;./echarts-exemple.component.scss&#x27;]
})

export class EchartsExempleComponent implements AfterViewInit {
  date: Promise&lt;string[] | null&gt; &#x3D; this.getDate();
  heightData: Promise&lt;number[] | null&gt; &#x3D; this.getHeightData();
  weightData: Promise&lt;number[] | null&gt; &#x3D; this.getWeightData();
  BMI: Promise&lt;number[] | null&gt; &#x3D; this.calculateBMI();

  // 组件初始化
  async ngAfterViewInit() {
    //第一个echarts表
    var chartDom &#x3D; document.getElementById(&#x27;main&#x27;);
    var myChart &#x3D; echarts.init(chartDom);
    var option;
    option &#x3D; {
      title: {
        text: &#x27;身体数据&#x27;
      },
      tooltip: {
        trigger: &#x27;axis&#x27;
      },
      legend: {
        data: [&#x27;身高&#x27;, &#x27;体重&#x27;,]
      },
      // grid: {
      //   left: &#x27;3%&#x27;,
      //   right: &#x27;4%&#x27;,
      //   bottom: &#x27;3%&#x27;,
      //   containLabel: true
      // },
      toolbox: {
        feature: {
          saveAsImage: {}
        }
      },
      xAxis: {
        type: &#x27;category&#x27;,
        boundaryGap: false,
        data: await this.date
      },
      yAxis: {
        type: &#x27;value&#x27;,
        min: 0,
        max: 250,
      },
      series: [
        {
          name: &#x27;身高&#x27;,
          type: &#x27;line&#x27;,
          data: await this.heightData
        },
        {
          name: &#x27;体重&#x27;,
          type: &#x27;line&#x27;,
          data: await this.weightData
        },

      ]
    };
    option &amp;&amp; myChart.setOption(option);


    //第二个echarts表
    var chartDom &#x3D; document.getElementById(&#x27;main1&#x27;);
    var myChart &#x3D; echarts.init(chartDom);
    var option;
    option &#x3D; {
      toolbox: {
        feature: {
          saveAsImage: {}
        }
      },
      title: {
        text: &#x27;BMI&#x27;
      },
      tooltip: {
        trigger: &#x27;axis&#x27;
      },
      xAxis: {
        type: &#x27;category&#x27;,
        boundaryGap: false,
        data: await this.date,
      },
      yAxis: {
        type: &#x27;value&#x27;
      },
      series: [
        {
          data: await this.BMI,
          type: &#x27;line&#x27;,
          smooth: true,
          markLine: {
            data: [
              { type: &#x27;max&#x27;, name: &#x27;最大值&#x27;, yAxis: 24.9 },
              { type: &#x27;min&#x27;, name: &#x27;最小值&#x27;, yAxis: 18.5 }
            ]
          }
        }
      ]
    };
    option &amp;&amp; myChart.setOption(option);
  }

  async getWeightData(): Promise&lt;number[] | null&gt; {
    const Upload &#x3D; Parse.Object.extend(&quot;HealthData&quot;);
    const query &#x3D; new Parse.Query(Upload);
    try {
      const result &#x3D; await query.find();
      if (result.length &gt; 0) {
        const weightDatas &#x3D; result.map((result) &#x3D;&gt; result.get(&quot;weight&quot;));
        console.log(&quot;体重数组&quot;, weightDatas);
        return weightDatas;
      } else {
        return null;
      }
    } catch (error) {
      console.error(&quot;Error:&quot;, error);
      return null;
    }
  }

  async getHeightData(): Promise&lt;number[] | null&gt; {
    const Upload &#x3D; Parse.Object.extend(&quot;HealthData&quot;);
    const query &#x3D; new Parse.Query(Upload);
    try {
      const result &#x3D; await query.find();
      if (result.length &gt; 0) {
        const heightDatas &#x3D; result.map((result) &#x3D;&gt; result.get(&quot;height&quot;));
        console.log(&quot;身高数组&quot;, heightDatas);
        return heightDatas;
      } else {
        return null;
      }
    } catch (error) {
      console.error(&quot;Error:&quot;, error);
      return null;
    }
  }

  async getDate(): Promise&lt;string[] | null&gt; {
    const Upload &#x3D; Parse.Object.extend(&quot;HealthData&quot;);
    const query &#x3D; new Parse.Query(Upload);
    query.descending(&quot;createdAt&quot;);
    try {
      const result &#x3D; await query.find();
      if (result.length &gt; 0) {
        const Dates &#x3D; result.map((result) &#x3D;&gt; {
          const date &#x3D; result.get(&quot;createdAt&quot;);
          return date.toISOString().split(&#x27;T&#x27;)[0];
        }).reverse();
        console.log(&quot;日期数组&quot;, Dates);
        return Dates;
      } else {
        return null;
      }
    } catch (error) {
      console.error(&quot;Error:&quot;, error);
      return null;
    }
  }
  async calculateBMI(): Promise&lt;number[] | null&gt; {
    try {
      const heightData: number[] | null &#x3D; await this.getHeightData();
      const weightData: number[] | null &#x3D; await this.getWeightData();
      if (heightData &#x3D;&#x3D;&#x3D; null || weightData &#x3D;&#x3D;&#x3D; null) {
        return null;
      }
      const bmiData: number[] &#x3D; [];
      for (let i &#x3D; 0; i &lt; heightData.length; i++) {
        const heightInMeter: number &#x3D; heightData[i] / 100; // 将厘米转换为米
        const bmi: number &#x3D; weightData[i] / (heightInMeter * heightInMeter);
        bmiData.push(bmi);
      }
      console.log(bmiData);
      return bmiData;
    } catch (error) {
      console.error(&#x27;Error calculating BMI:&#x27;, error);
      return null;
    }
  }

}</code></pre>
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