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