go-chart/_examples/descending/main.go

56 lines
1.3 KiB
Go
Raw Normal View History

2017-01-10 22:50:17 +01:00
package main
import (
"net/http"
"github.com/wcharczuk/go-chart"
)
func drawChart(res http.ResponseWriter, req *http.Request) {
/*
The below will draw the same chart as the `basic` example, except with both the x and y axes turned on.
In this case, both the x and y axis ticks are generated automatically, the x and y ranges are established automatically, the canvas "box" is adjusted to fit the space the axes occupy so as not to clip.
*/
graph := chart.Chart{
Height: 500,
Width: 500,
XAxis: chart.XAxis{
Style: chart.Style{
Show: true,
},
/*Range: &chart.ContinuousRange{
Descending: true,
},*/
},
YAxis: chart.YAxis{
Style: chart.Style{
Show: true,
},
Range: &chart.ContinuousRange{
Descending: true,
},
},
Series: []chart.Series{
chart.ContinuousSeries{
Style: chart.Style{
Show: true,
StrokeColor: chart.GetDefaultColor(0).WithAlpha(64),
FillColor: chart.GetDefaultColor(0).WithAlpha(64),
},
XValues: []float64{1.0, 2.0, 3.0, 4.0, 5.0},
YValues: []float64{1.0, 2.0, 3.0, 4.0, 5.0},
},
},
}
res.Header().Set("Content-Type", "image/png")
graph.Render(chart.PNG, res)
}
func main() {
http.HandleFunc("/", drawChart)
http.ListenAndServe(":8080", nil)
}