54 lines
1.2 KiB
Go
54 lines
1.2 KiB
Go
|
package main
|
||
|
|
|
||
|
|
import (
|
||
|
|
"net/http"
|
||
|
|
|
||
|
|
"github.com/wcharczuk/go-chart"
|
||
|
|
)
|
||
|
|
|
||
|
|
func drawChart(res http.ResponseWriter, req *http.Request) {
|
||
|
|
|
||
|
|
/*
|
||
|
|
In this example we add a second series, and assign it to the secondary y axis, giving that series it's own range.
|
||
|
|
|
||
|
|
We also enable all of the axes by setting the `Show` propery of their respective styles to `true`.
|
||
|
|
*/
|
||
|
|
|
||
|
|
graph := chart.Chart{
|
||
|
|
XAxis: chart.XAxis{
|
||
|
|
Style: chart.Style{
|
||
|
|
Show: true, //enables / displays the x-axis
|
||
|
|
},
|
||
|
|
},
|
||
|
|
YAxis: chart.YAxis{
|
||
|
|
Style: chart.Style{
|
||
|
|
Show: true, //enables / displays the y-axis
|
||
|
|
},
|
||
|
|
},
|
||
|
|
YAxisSecondary: chart.YAxis{
|
||
|
|
Style: chart.Style{
|
||
|
|
Show: true, //enables / displays the secondary y-axis
|
||
|
|
},
|
||
|
|
},
|
||
|
|
Series: []chart.Series{
|
||
|
|
chart.ContinuousSeries{
|
||
|
|
XValues: []float64{1.0, 2.0, 3.0, 4.0, 5.0},
|
||
|
|
YValues: []float64{1.0, 2.0, 3.0, 4.0, 5.0},
|
||
|
|
},
|
||
|
|
chart.ContinuousSeries{
|
||
|
|
YAxis: chart.YAxisSecondary,
|
||
|
|
XValues: []float64{1.0, 2.0, 3.0, 4.0, 5.0},
|
||
|
|
YValues: []float64{50.0, 40.0, 30.0, 20.0, 10.0},
|
||
|
|
},
|
||
|
|
},
|
||
|
|
}
|
||
|
|
|
||
|
|
res.Header().Set("Content-Type", "image/png")
|
||
|
|
graph.Render(chart.PNG, res)
|
||
|
|
}
|
||
|
|
|
||
|
|
func main() {
|
||
|
|
http.HandleFunc("/", drawChart)
|
||
|
|
http.ListenAndServe(":8080", nil)
|
||
|
|
}
|