120 lines
1.5 KiB
Go
120 lines
1.5 KiB
Go
package main
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import (
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"io/ioutil"
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"os"
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"path/filepath"
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"github.com/vicanso/go-charts/v2"
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)
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func writeFile(buf []byte) error {
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tmpPath := "./tmp"
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err := os.MkdirAll(tmpPath, 0700)
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if err != nil {
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return err
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}
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file := filepath.Join(tmpPath, "chinese-line-chart.png")
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err = os.WriteFile(file, buf, 0600)
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if err != nil {
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return err
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}
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return nil
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}
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func main() {
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// 字体文件需要自行下载
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// https://github.com/googlefonts/noto-cjk
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buf, err := ioutil.ReadFile("./NotoSansSC.ttf")
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if err != nil {
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panic(err)
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}
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err = charts.InstallFont("noto", buf)
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if err != nil {
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panic(err)
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}
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font, _ := charts.GetFont("noto")
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charts.SetDefaultFont(font)
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values := [][]float64{
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{
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120,
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132,
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101,
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134,
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90,
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230,
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210,
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},
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{
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220,
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182,
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191,
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234,
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290,
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330,
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310,
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},
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{
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150,
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232,
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201,
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154,
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190,
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330,
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410,
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},
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{
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320,
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332,
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301,
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334,
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390,
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330,
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320,
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},
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{
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820,
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932,
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901,
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934,
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1290,
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1330,
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1320,
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},
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}
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p, err := charts.LineRender(
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values,
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charts.TitleTextOptionFunc("测试"),
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charts.XAxisDataOptionFunc([]string{
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"星期一",
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"星期二",
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"星期三",
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"星期四",
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"星期五",
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"星期六",
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"星期日",
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}),
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charts.LegendLabelsOptionFunc([]string{
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"邮件",
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"广告",
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"视频广告",
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"直接访问",
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"搜索引擎",
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}, charts.PositionCenter),
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)
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if err != nil {
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panic(err)
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}
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buf, err = p.Bytes()
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if err != nil {
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panic(err)
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}
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err = writeFile(buf)
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if err != nil {
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panic(err)
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}
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}
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