Quick Start with Vue and ECharts4Taro3: Learn to build beautiful data visualization charts in one hour

Vue and ECharts4Taro3 Quick Start: Learn to build beautiful data visualization charts in one hour

Introduction: In modern data analysis and presentation, data visualization charts are a very important tool. Vue and ECharts4Taro3 are two very popular frameworks and libraries that combine to quickly build beautiful data visualization charts. This article will use code examples to help you quickly get started with Vue and ECharts4Taro3 in one hour, allowing you to easily build cool data visualization charts.

1. Preparation:

First, you need to make sure Node.js and npm are installed on your machine. Then, we create a new Vue project.

Open the terminal and enter the following command:

npm install -g @vue/cli
vue create vue-echarts-demo
cd vue-echarts-demo
npm run serve

After the project is created, you can open http://localhost:8080 in the browser to ensure that your project has run successfully.

2. Install ECharts4Taro3:

Next, we need to install ECharts4Taro3 dependencies. Run the following command in the terminal:

npm install echarts4taro3

After the installation is complete, we can use ECharts4Taro3 to build data visualization charts.

3. Create a simple histogram:

First, we need to create a simple histogram. Create a new folder and file in the src directory of the Vue project: components/BarChart.vue.

In BarChart.vue, we can use the following code to create a simple histogram:

<template>
  <view class="bar-chart">
    <ec-canvas id="canvas-id" :ec="ec"></ec-canvas>
  </view>
</template>

<script>
import { ecTheme } from 'echarts4taro3';   // 导入主题
import * as echarts from 'echarts4taro3';  // 导入ECharts库
import geoJson from '@/assets/map';       // 导入地图数据

export default {
  data() {
    return {
      ec: {
        onInit: initChart    // 初始化图表
      }
    }
  },
  methods: {
    initChart(canvas, width, height) {
      const chart = echarts.init(canvas, null, {
        width: width,
        height: height
      });
      canvas.setChart(chart);

      const option = {
        tooltip: {},
        xAxis: {
          data: ['星期一', '星期二', '星期三', '星期四', '星期五', '星期六', '星期日']
        },
        yAxis: {},
        series: [{
          name: '销量',
          type: 'bar',
          data: [5, 20, 36, 10, 10, 20, 15]
        }]
      };

      chart.setOption(option);
    }
  }
}
</script>

<style>
.bar-chart {
  width: 100%;
  height: 500rpx;
}
</style>

The above code creates a simple histogram and uses some basic configuration items. You can customize the chart style and data according to your needs.

4. Use the bar chart component in the page:

Now that we have created a simple bar chart component, we need to introduce it into the page.

Open the App.vue file in the src directory of the Vue project, and use the following code to introduce the histogram component we just created:

<template>
  <view id="app">
    <bar-chart></bar-chart>
  </view>
</template>

<script>
import BarChart from './components/BarChart';

export default {
  name: 'App',
  components: {
    'bar-chart': BarChart
  }
}
</script>

<style>
/* 样式可以根据自己的需要进行调整 */
</style>

Now, open http:// in your application localhost:8080, you should be able to see a simple bar chart.

Summary:

Through this article, you have learned how to use Vue and ECharts4Taro3 to quickly build beautiful data visualization charts. You can further customize and optimize the style and logic of the chart according to your needs. I hope this article is helpful to you, and I wish you smooth sailing on the road to data visualization!

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