go-chart/testserver/main.go
2016-07-07 23:49:31 -07:00

58 lines
1.2 KiB
Go

package main
import (
"bytes"
"log"
"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/svg+xml")
c := chart.Chart{
Title: "A Test Chart",
TitleStyle: chart.Style{
Show: true,
},
Width: 640,
Height: 480,
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.ContinuousSeries{
Name: "a",
XValues: []float64{1.0, 2.0, 3.0, 4.0},
YValues: []float64{2.5, 5.0, 2.0, 3.3},
},
chart.ContinuousSeries{
Name: "b",
XValues: []float64{3.0, 4.0, 5.0, 6.0},
YValues: []float64{6.0, 5.0, 4.0, 1.0},
},
},
}
buffer := bytes.NewBuffer([]byte{})
err := c.Render(chart.SVG, buffer)
if err != nil {
return rc.API().InternalError(err)
}
return rc.Raw(buffer.Bytes())
})
log.Fatal(app.Start())
}