73 lines
1.6 KiB
Go
73 lines
1.6 KiB
Go
package main
|
|
|
|
import (
|
|
"bytes"
|
|
"image/color"
|
|
"log"
|
|
"time"
|
|
|
|
"github.com/wcharczuk/go-chart"
|
|
"github.com/wcharczuk/go-web"
|
|
)
|
|
|
|
func main() {
|
|
app := web.New()
|
|
app.SetName("Chart Test Server")
|
|
app.SetLogger(web.NewStandardOutputLogger())
|
|
app.GET("/", func(rc *web.RequestContext) web.ControllerResult {
|
|
rc.Response.Header().Set("Content-Type", "image/png")
|
|
now := time.Now()
|
|
c := chart.Chart{
|
|
Title: "Stocks Bruh.",
|
|
TitleStyle: chart.Style{
|
|
Show: true,
|
|
},
|
|
Width: 1024,
|
|
Height: 400,
|
|
Canvas: chart.Style{
|
|
Padding: chart.Box{
|
|
Right: 40,
|
|
Bottom: 40,
|
|
},
|
|
},
|
|
Axes: chart.Style{
|
|
Show: true,
|
|
StrokeWidth: 1.0,
|
|
},
|
|
YRange: chart.Range{
|
|
Min: 0.0,
|
|
Max: 7.0,
|
|
},
|
|
FinalValueLabel: chart.Style{
|
|
Show: true,
|
|
},
|
|
Series: []chart.Series{
|
|
chart.TimeSeries{
|
|
Name: "goog",
|
|
Style: chart.Style{
|
|
StrokeWidth: 1.0,
|
|
},
|
|
XValues: []time.Time{now.AddDate(0, 0, -4), now.AddDate(0, 0, -3), now.AddDate(0, 0, -2), now.AddDate(0, 0, -1)},
|
|
YValues: []float64{2.5, 5.0, 2.0, 3.0},
|
|
},
|
|
chart.TimeSeries{
|
|
Name: "aapl",
|
|
Style: chart.Style{
|
|
StrokeWidth: 1.0,
|
|
StrokeColor: color.RGBA{R: 0, G: 217, B: 116, A: 255},
|
|
},
|
|
XValues: []time.Time{now.AddDate(0, 0, -5), now.AddDate(0, 0, -4), now.AddDate(0, 0, -2), now.AddDate(0, 0, -1)},
|
|
YValues: []float64{3.0, 2.7, 2.0, 1.1},
|
|
},
|
|
},
|
|
}
|
|
|
|
buffer := bytes.NewBuffer([]byte{})
|
|
err := c.Render(chart.PNG, buffer)
|
|
if err != nil {
|
|
return rc.API().InternalError(err)
|
|
}
|
|
return rc.Raw(buffer.Bytes())
|
|
})
|
|
log.Fatal(app.Start())
|
|
}
|