115 lines
1.3 KiB
Go
115 lines
1.3 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, "line-chart.png")
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err = ioutil.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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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("Line"),
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charts.XAxisDataOptionFunc([]string{
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"Mon",
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"Tue",
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"Wed",
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"Thu",
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"Fri",
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"Sat",
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"Sun",
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}),
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charts.LegendLabelsOptionFunc([]string{
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"Email",
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"Union Ads",
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"Video Ads",
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"Direct",
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"Search Engine",
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}, "50"),
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func(opt *charts.ChartOption) {
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opt.Legend.Padding = charts.Box{
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Top: 5,
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Bottom: 10,
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}
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opt.SymbolShow = charts.FalseFlag()
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opt.LineStrokeWidth = 1
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},
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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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