go-charts/examples/horizontal_bar_chart/main.go

84 lines
1.1 KiB
Go

package main
import (
"os"
"path/filepath"
"github.com/vicanso/go-charts/v2"
)
func writeFile(buf []byte) error {
tmpPath := "./tmp"
err := os.MkdirAll(tmpPath, 0700)
if err != nil {
return err
}
file := filepath.Join(tmpPath, "horizontal-bar-chart.png")
err = os.WriteFile(file, buf, 0600)
if err != nil {
return err
}
return nil
}
func main() {
values := [][]float64{
{
10,
30,
50,
70,
90,
110,
130,
},
{
20,
40,
60,
80,
100,
120,
140,
},
}
p, err := charts.HorizontalBarRender(
values,
charts.TitleTextOptionFunc("World Population"),
charts.PaddingOptionFunc(charts.Box{
Top: 20,
Right: 40,
Bottom: 20,
Left: 20,
}),
charts.LegendLabelsOptionFunc([]string{
"2011",
"2012",
}),
charts.YAxisDataOptionFunc([]string{
"UN",
"Brazil",
"Indonesia",
"USA",
"India",
"China",
"World",
}),
func(opt *charts.ChartOption) {
opt.SeriesList[0].RoundRadius = 5
},
)
if err != nil {
panic(err)
}
buf, err := p.Bytes()
if err != nil {
panic(err)
}
err = writeFile(buf)
if err != nil {
panic(err)
}
}