Method to generate horizontal histogram using ECharts and Python interface-Python Tutorial-php.cn

Method to generate horizontal histogram using ECharts and Python interface

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Release： 2023-12-18 18:48:56

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Method to generate horizontal histogram using ECharts and Python interface

Method of generating horizontal histogram using ECharts and Python interface

ECharts is a visual chart library developed based on JavaScript, which can easily create various data visualization charts. Combined with the Python interface, data processing and visualization can be more conveniently performed.

This article will introduce the method of generating horizontal histograms using ECharts and Python interfaces, and provide specific code examples.

Prepare data

First, we need to prepare the data. Here we take the scores of students in a certain class as an example. Suppose we have the following data:

Name	中文	马	English
张三	90	80	75
李四	75	95	85
王五	80	90	70
Zhao Liu	85	75	90

We can use the Pandas library in Python to read data and process it. The specific code is as follows:

import pandas as pd

# 读取数据
df = pd.read_csv('成绩表.csv')

# 将姓名作为索引
df.set_index('姓名', inplace=True)

# 取出各科成绩
chinese = df['语文']
math = df['数学']
english = df['英语']

# 计算平均成绩
average = df.mean(axis=1)

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Use ECharts to draw a horizontal histogram

Next, we use ECharts to draw a horizontal histogram. The specific code is as follows:

<!DOCTYPE html>
<html>
<head>
    <meta charset="utf-8">
    <title>水平柱状图示例</title>
    <script src="https://cdn.staticfile.org/echarts/5.0.2/echarts.min.js"></script>
</head>
<body>
    <div id="main" style="height: 500px;"></div>
    <script>
        // 初始化echarts实例
        var myChart = echarts.init(document.getElementById('main'))

        // 配置项
        var option = {
            title: {
                text: '某班级成绩'
            },
            tooltip: {},
            legend: {
                data:['语文', '数学', '英语', '平均分']
            },
            xAxis: {
                type: 'value',
                axisLabel: {
                    show: false
                }
            },
            yAxis: {
                type: 'category',
                data: ['张三', '李四', '王五', '赵六']
            },
            series: [
                {
                    name: '语文',
                    type: 'bar',
                    stack: '总成绩',
                    label: {
                        show: true,
                        position: 'right'
                    },
                    data: chinese
                },
                {
                    name: '数学',
                    type: 'bar',
                    stack: '总成绩',
                    label: {
                        show: true,
                        position: 'right'
                    },
                    data: math
                },
                {
                    name: '英语',
                    type: 'bar',
                    stack: '总成绩',
                    label: {
                        show: true,
                        position: 'right'
                    },
                    data: english
                },
                {
                    name: '平均分',
                    type: 'bar',
                    stack: '总成绩',
                    label: {
                        show: true,
                        position: 'right'
                    },
                    data: average
                }
            ]
        };

        myChart.setOption(option)
    </script>
</body>
</html>

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Run the code, and we will see a beautiful horizontal bar chart.

Summary

This article introduces the method of generating horizontal histograms using ECharts and Python interfaces, and provides specific code examples. Through this method, we can easily process and visualize the data, making the data more intuitive and easy to understand.

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