I want to set the data labels to outside and adjust the size of all text in the chart. I checked the documentation and found no relevant settings.

[sockx]

current code

	r.ReportExcel.AddChart(thisSheetName, "H5", &excelize.Chart{
		Type:     excelize.Pie,
		HoleSize: 16,
		Series: []excelize.ChartSeries{
			{
				Name:       thisSheetName + "!$D$1",
				Categories: thisSheetName + "!$A$2:$A$10",
				Values:     thisSheetName + "!$D$2:$D$10",
			},
		},
		PlotArea: excelize.ChartPlotArea{
			ShowCatName:     true,
			ShowVal:         true,
			ShowPercent:     true,
			ShowLeaderLines: true,
		},
		Dimension: excelize.ChartDimension{
			Height: 620,
			Width:  850,
		},
		Legend: excelize.ChartLegend{
			Position: "left",
		},
	})

current effect

the effect i want

[xuri]

Thanks for your feedback. This library only support label position in "Best Fit", I'll consider add support for change this setting later.

[xuri]

This library now support set the data labels position for chart (#1755), please upgrade to the master branch code, and this feature will be released in the next version. Now you can set the data labels position like this:

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",
                DataLabelPosition: excelize.ChartDataLabelsPositionOutsideEnd,
            },
        },
        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)
    }
}