fix ui default

cmd/clitest/main.go

@@ -234,7 +234,6 @@ func main() {
 			}
 			primary := toChart(r.URL.Path == "/bal", r.URL.Query().Get("chart"), register)
 			if len(predicted) > 0 {
-				log.Printf("overlapping predicted: %+v", predicted)
 				primary.Overlap(toChart(r.URL.Path == "/bal", "line", predicted))
 			}
 			if err := primary.Render(w); err != nil {
@@ -343,7 +342,10 @@ func (line Line) AddY(name string, v []int) {
 	for i := range y {
 		y[i].Value = v[i]
 	}
-	line.AddSeries(name, y)
+	line.AddSeries(name, y).
+		SetSeriesOptions(charts.WithBarChartOpts(opts.BarChart{
+			Stack: "stackB",
+		}))
 }
 
 func (line Line) Overlap(other Chart) {