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86 lines
1.4 KiB
86 lines
1.4 KiB
package goCharts
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/*
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*
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@author: sre
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@date: 2022/9/17 0017
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@desc: todo
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*
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*/
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import (
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"github.com/vicanso/go-charts/v2"
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"math/rand"
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"time"
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)
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func getRand(len int) []float64 {
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var res []float64
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for i := 0; i < len; i++ {
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randFloat := float64(rand.Intn(1000))
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res = append(res, randFloat)
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}
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return res
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}
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func Draw() {
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values := [][]float64{
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getRand(7),
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getRand(7),
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getRand(7),
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getRand(7),
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}
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p, err := charts.LineRender(
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values,
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//charts.SVGTypeOption(),
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charts.ThemeOptionFunc(charts.ThemeGrafana),
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charts.WidthOptionFunc(720),
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charts.HeightOptionFunc(1280),
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charts.TitleTextOptionFunc("symbol price"),
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charts.XAxisDataOptionFunc(getLastDays()),
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charts.LegendLabelsOptionFunc([]string{
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"BTC",
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"ETH",
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"BNB",
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"TRX",
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}, "150"),
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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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func getLastDays() []string {
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now := time.Now()
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getDay := func(t time.Time, dif int) string {
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return t.AddDate(0, 0, dif).Format("01/02")
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}
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return []string{
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getDay(now, -6),
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getDay(now, -5),
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getDay(now, -4),
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getDay(now, -3),
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getDay(now, -2),
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getDay(now, -1),
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getDay(now, 0),
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}
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}
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