38 lines
696 B
Go
38 lines
696 B
Go
package main
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import (
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"log"
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"net/http"
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"github.com/wcharczuk/go-chart"
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)
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func drawChart(res http.ResponseWriter, req *http.Request) {
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println("drawing scatter plot")
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graph := chart.Chart{
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Series: []chart.Series{
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chart.ContinuousSeries{
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Style: chart.Style{
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Show: true,
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StrokeWidth: chart.Disabled,
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DotWidth: 3,
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},
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XValues: chart.Sequence.Random(32, 1024),
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YValues: chart.Sequence.Random(32, 1024),
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},
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},
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}
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res.Header().Set("Content-Type", "image/png")
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err := graph.Render(chart.PNG, res)
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if err != nil {
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log.Println(err.Error())
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}
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}
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func main() {
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http.HandleFunc("/", drawChart)
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log.Fatal(http.ListenAndServe(":8080", nil))
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}
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