43 lines
991 B
Go
43 lines
991 B
Go
package main
|
|
|
|
//go:generate go run main.go
|
|
|
|
import (
|
|
"os"
|
|
|
|
chart "git.smarteching.com/zeni/go-chart/v2"
|
|
)
|
|
|
|
func main() {
|
|
|
|
/*
|
|
In this example we add a `Renderable` or a custom component to the `Elements` array.
|
|
In this specific case it is a pre-built renderable (`CreateLegend`) that draws a legend for the chart's series.
|
|
If you like, you can use `CreateLegend` as a template for writing your own renderable, or even your own legend.
|
|
*/
|
|
|
|
graph := chart.Chart{
|
|
Background: chart.Style{
|
|
Padding: chart.Box{
|
|
Top: 20,
|
|
Left: 20,
|
|
},
|
|
},
|
|
Series: []chart.Series{
|
|
chart.ContinuousSeries{
|
|
Name: "A test series",
|
|
XValues: []float64{1.0, 2.0, 3.0, 4.0, 5.0},
|
|
YValues: []float64{1.0, 2.0, 3.0, 4.0, 5.0},
|
|
},
|
|
},
|
|
}
|
|
|
|
//note we have to do this as a separate step because we need a reference to graph
|
|
graph.Elements = []chart.Renderable{
|
|
chart.Legend(&graph),
|
|
}
|
|
|
|
f, _ := os.Create("output.png")
|
|
defer f.Close()
|
|
graph.Render(chart.PNG, f)
|
|
}
|