ECharts와 golang을 활용하여 다양한 통계 차트를 쉽게 그리는 방법을 알려드립니다.

package main

import (
    "fmt"
    "math/rand"
    "time"

    "github.com/go-echarts/go-echarts/charts"
)

func randomData() []struct {
    Name  string
    Value int
} {
    data := []struct {
        Name  string
        Value int
    }{}
    r := rand.New(rand.NewSource(time.Now().UnixNano()))
    for i := 0; i < 10; i++ {
        data = append(data, struct {
            Name  string
            Value int
        }{Name: fmt.Sprintf("数据 %d", i), Value: r.Intn(100)})
    }
    return data
}

func main() {
    // 生成随机数据
    data := randomData()

    // 创建柱状图对象
    bar := charts.NewBar()

    // 设置X轴数据
    xData := []string{}
    for _, d := range data {
        xData = append(xData, d.Name)
    }
    bar.SetXAxis(xData)

    // 设置Y轴数据
    yData := []int{}
    for _, d := range data {
        yData = append(yData, d.Value)
    }
    bar.AddYAxis("数值", yData)

    // 设置图表标题
    bar.SetGlobalOptions(charts.WithTitleOpts(opts.Title{
        Title:    "柱状图示例",
        Subtitle: "数据来源：随机数",
    }))

    // 保存图表到文件
    bar.Render("bar.html")
}

package main

import (
    "time"

    "github.com/go-echarts/go-echarts/charts"
    "github.com/go-echarts/go-echarts/opts"
)

func main() {
    // 创建折线图对象
    line := charts.NewLine()

    // 设置X轴数据
    xData := []string{}
    start := time.Date(2021, time.January, 1, 0, 0, 0, 0, time.UTC)
    for i := 0; i < 365; i++ {
        xData = append(xData, start.AddDate(0, 0, i).Format("2006-01-02"))
    }
    line.SetXAxis(xData)

    // 设置Y轴数据
    yData := []opts.LineData{}
    for i := 0; i < len(xData); i++ {
        yData = append(yData, opts.LineData{Value: i})
    }
    line.AddYAxis("数值", yData)

    // 设置图表标题
    line.SetGlobalOptions(charts.WithTitleOpts(opts.Title{
        Title:    "折线图示例",
        Subtitle: "数据来源：时间序列",
    }))

    // 保存图表到文件
    line.Render("line.html")
}