go-chart/examples/axes/main.go
2016-07-18 11:53:29 -07:00

48 lines
1.2 KiB
Go

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{
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
},
},
Series: []chart.Series{
chart.ContinuousSeries{
Style: chart.Style{
Show: true,
StrokeColor: chart.GetDefaultSeriesStrokeColor(0).WithAlpha(64),
FillColor: chart.GetDefaultSeriesStrokeColor(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)
}