import (
	"math/rand"
    
	"github.com/go-echarts/go-echarts/v2/charts"
	"github.com/go-echarts/go-echarts/v2/opts"
	gonb_echarts "github.com/janpfeifer/gonb-echarts"
)
// generate random data for bar chart
func generateBarItems() []opts.BarData {
	items := make([]opts.BarData, 0)
	for i := 0; i < 7; i++ {
		items = append(items, opts.BarData{Value: rand.Intn(300)})
	}
	return items
}
%%
bar := charts.NewBar()
// set some global options like Title/Legend/ToolTip or anything else
bar.SetGlobalOptions(charts.WithTitleOpts(opts.Title{
    Title:    "My first bar chart generated by go-echarts",
    Subtitle: "It's extremely easy to use, right?",
}))
// Put data into instance
bar.SetXAxis([]string{"Mon", "Tue", "Wed", "Thu", "Fri", "Sat", "Sun"}).
    AddSeries("Category A", generateBarItems()).
    AddSeries("Category B", generateBarItems())
// Display
err := gonb_echarts.Display(bar, "width: 1024px; height:400px; background: white;")
if err != nil {
    fmt.Printf("Error: %+v\n", err)
}