main.go

package main

import (
	"fmt"
	"os"
	"path/filepath"

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

/*
Example basic scatter chart with a variety of basic configuration options shown.
*/

func writeFile(buf []byte) error {
	tmpPath := "./tmp"
	if err := os.MkdirAll(tmpPath, 0700); err != nil {
		return err
	}

	file := filepath.Join(tmpPath, "scatter-chart-1-basic.png")
	return os.WriteFile(file, buf, 0600)
}

func main() {
	values := [][]float64{
		{120, 132, 101, charts.GetNullValue(), 90, 230, 210},
		{220, 182, 191, 234, 290, 330, 310},
		{150, 232, 201, 154, 190, 330, 410},
		{320, 332, 301, 334, 390, 330, 320},
		{820, 932, 901, 934, 1290, 1330, 1320},
	}
	p, err := charts.ScatterRender(
		values,
		charts.TitleTextOptionFunc("Scatter"),
		charts.XAxisLabelsOptionFunc([]string{
			"Mon", "Tue", "Wed", "Thu", "Fri", "Sat", "Sun",
		}),
		charts.LegendLabelsOptionFunc([]string{
			"Email", "Union Ads", "Video Ads", "Direct", "Search Engine",
		}),
		func(opt *charts.ChartOption) {
			opt.Title.FontStyle.FontSize = 16
			opt.Legend.Padding = charts.Box{
				Left: 100,
			}
			opt.Symbol = charts.SymbolCircle
			opt.ValueFormatter = func(f float64) string {
				return fmt.Sprintf("%.0f", f)
			}
		},
	)
	if err != nil {
		panic(err)
	} else if buf, err := p.Bytes(); err != nil {
		panic(err)
	} else if err = writeFile(buf); err != nil {
		panic(err)
	}
}