go-chart/_examples/custom_ranges/main.go
2018-12-06 16:46:27 +01:00

39 lines
847 B
Go

package main
import (
"net/http"
"git.gutmet.org/go-chart.git"
)
func drawChart(res http.ResponseWriter, req *http.Request) {
/*
In this example we set a custom range for the y-axis, overriding the automatic range generation.
Note: the chart will still generate the ticks automatically based on the custom range, so the intervals may be a bit weird.
*/
graph := chart.Chart{
YAxis: chart.YAxis{
Style: chart.StyleShow(),
Range: &chart.ContinuousRange{
Min: 0.0,
Max: 10.0,
},
},
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},
},
},
}
res.Header().Set("Content-Type", "image/png")
graph.Render(chart.PNG, res)
}
func main() {
http.HandleFunc("/", drawChart)
http.ListenAndServe(":8080", nil)
}