36 lines
691 B
Go
36 lines
691 B
Go
package main
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import (
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"fmt"
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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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pie := chart.PieChart{
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Canvas: chart.Style{
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FillColor: chart.ColorLightGray,
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},
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Values: []chart.PieChartValue{
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{Value: 0.3, Label: "Blue"},
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{Value: 0.2, Label: "Green"},
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{Value: 0.2, Label: "Gray"},
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{Value: 0.1, Label: "Orange"},
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{Value: 0.1, Label: "??"},
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},
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}
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res.Header().Set("Content-Type", "image/png")
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err := pie.Render(chart.PNG, res)
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if err != nil {
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fmt.Printf("Error rendering pie chart: %v\n", err)
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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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