go-chart/testserver/main.go

60 lines
1.3 KiB
Go
Raw Normal View History

2016-07-07 23:44:03 +02:00
package main
import (
"bytes"
"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 {
2016-07-08 07:18:53 +02:00
rc.Response.Header().Set("Content-Type", "image/svg+xml")
2016-07-07 23:44:03 +02:00
now := time.Now()
c := chart.Chart{
Title: "A Test Chart",
2016-07-07 23:44:03 +02:00
TitleStyle: chart.Style{
Show: true,
},
2016-07-08 05:26:07 +02:00
Width: 640,
Height: 480,
2016-07-07 23:44:03 +02:00
Axes: chart.Style{
Show: true,
StrokeWidth: 1.0,
},
YRange: chart.Range{
Min: 0.0,
Max: 7.0,
},
FinalValueLabel: chart.Style{
Show: true,
},
2016-07-07 23:44:03 +02:00
Series: []chart.Series{
chart.TimeSeries{
Name: "a",
2016-07-07 23:44:03 +02:00
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: "b",
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{6.0, 5.0, 4.0, 1.0},
},
2016-07-07 23:44:03 +02:00
},
}
buffer := bytes.NewBuffer([]byte{})
2016-07-08 07:18:53 +02:00
err := c.Render(chart.SVG, buffer)
2016-07-07 23:44:03 +02:00
if err != nil {
return rc.API().InternalError(err)
}
return rc.Raw(buffer.Bytes())
})
log.Fatal(app.Start())
}