Pie chart

For example, add a pie chart that like the this:

create pie chart with excelize using Go

package main

import (
    "fmt"

    "github.com/xuri/excelize/v2"
)

func main() {
    f := excelize.NewFile()
    defer func() {
        if err := f.Close(); err != nil {
            fmt.Println(err)
        }
    }()
    for idx, row := range [][]interface{}{
        {"Apple", "Orange", "Pear"},
        {2, 3, 3},
    } {
        cell, err := excelize.CoordinatesToCellName(1, idx+1)
        if err != nil {
            fmt.Println(err)
            return
        }
        if err := f.SetSheetRow("Sheet1", cell, &row); err != nil {
            fmt.Println(err)
            return
        }
    }
    if err := f.AddChart("Sheet1", "E1", &excelize.Chart{
        Type: excelize.Pie,
        Series: []excelize.ChartSeries{
            {
                Name:       "Amount",
                Categories: "Sheet1!$A$1:$C$1",
                Values:     "Sheet1!$A$2:$C$2",
            },
        },
        Format: excelize.GraphicOptions{
            OffsetX: 15,
            OffsetY: 10,
        },
        Title: []excelize.RichTextRun{
            {
                Text: "Fruit Pie Chart",
            },
        },
        PlotArea: excelize.ChartPlotArea{
            ShowPercent: true,
        },
    }); err != nil {
        fmt.Println(err)
        return
    }
    // Save workbook
    if err := f.SaveAs("Book1.xlsx"); err != nil {
        fmt.Println(err)
    }
}

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