55 lines
1.4 KiB
Go
55 lines
1.4 KiB
Go
package main
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import (
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"net/http"
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"git.gutmet.org/go-chart.git"
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)
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func drawChart(res http.ResponseWriter, req *http.Request) {
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/*
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The below will draw the same chart as the `basic` example, except with both the x and y axes turned on.
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In this case, both the x and y axis ticks are generated automatically, the x and y ranges are established automatically,
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the canvas "box" is adjusted to fit the space the axes occupy so as not to clip.
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Additionally, it shows how you can use the "Descending" property of continuous ranges to change the ordering of
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how values (including ticks) are drawn.
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*/
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graph := chart.Chart{
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Height: 500,
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Width: 500,
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XAxis: chart.XAxis{
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Style: chart.StyleShow(),
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/*Range: &chart.ContinuousRange{
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Descending: true,
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},*/
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},
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YAxis: chart.YAxis{
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Style: chart.StyleShow(),
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Range: &chart.ContinuousRange{
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Descending: 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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Style: chart.Style{
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Show: true,
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StrokeColor: chart.GetDefaultColor(0).WithAlpha(64),
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FillColor: chart.GetDefaultColor(0).WithAlpha(64),
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},
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XValues: []float64{1.0, 2.0, 3.0, 4.0, 5.0},
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YValues: []float64{1.0, 2.0, 3.0, 4.0, 5.0},
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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.ListenAndServe(":8080", nil)
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}
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