76 lines
1.6 KiB
Go
76 lines
1.6 KiB
Go
package main
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import (
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"net/http"
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"github.com/wcharczuk/go-chart"
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"github.com/wcharczuk/go-chart/drawing"
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"github.com/wcharczuk/go-chart/seq"
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)
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func drawChart(res http.ResponseWriter, req *http.Request) {
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graph := chart.Chart{
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Background: chart.Style{
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Padding: chart.Box{
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Top: 50,
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Left: 25,
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Right: 25,
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Bottom: 10,
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},
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FillColor: drawing.ColorFromHex("efefef"),
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},
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XAxis: chart.XAxis{
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Style: chart.Style{
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Show: true,
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},
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},
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YAxis: chart.YAxis{
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Style: chart.Style{
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Show: true,
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},
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},
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Series: []chart.Series{
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chart.ContinuousSeries{
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XValues: seq.Wrap(seq.NewLinear().WithStart(1.0).WithEnd(100.0)).Array(),
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YValues: seq.Wrap(seq.NewRandom().WithLen(100).WithAverage(256)).Array(),
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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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graph.Render(chart.PNG, res)
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}
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func drawChartDefault(res http.ResponseWriter, req *http.Request) {
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graph := chart.Chart{
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Background: chart.Style{
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FillColor: drawing.ColorFromHex("efefef"),
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},
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XAxis: chart.XAxis{
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Style: chart.Style{
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Show: true,
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},
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},
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YAxis: chart.YAxis{
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Style: chart.Style{
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Show: true,
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},
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},
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Series: []chart.Series{
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chart.ContinuousSeries{
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XValues: seq.Wrap(seq.NewLinear().WithStart(1.0).WithEnd(100.0)).Array(),
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YValues: seq.Wrap(seq.NewRandom().WithLen(100).WithAverage(256)).Array(),
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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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graph.Render(chart.PNG, res)
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}
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func main() {
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http.HandleFunc("/", drawChart)
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http.HandleFunc("/default", drawChartDefault)
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http.ListenAndServe(":8080", nil)
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}
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