better test too

config.go

@@ -30,7 +30,7 @@ type Data struct {
 }
 
 func newConfig() (Config, error) {
-	dataPoints := envOr("DATA_POINTS", `[[1, 1], [2, 2], [2, 2]]`)
+	dataPoints := envOr("DATA_POINTS", `[[1, 1], [1, 2], [2, 1], [2, 1], [4, 3]]`)
 	dataLabels := envOr("DATA_LABELS", ``)
 	dataWeightFloor := envOr("DATA_WEIGHT_FLOOR", `12`)
 	dataWeightRange := envOr("DATA_WEIGHT_RANGE", `20`)
@@ -103,19 +103,12 @@ func envOr(k, v string) string {
 	return v
 }
 
-func (d Data) AsScatterData() (string, []float64, string, []opts.ScatterData, error) {
+func (d Data) AsScatterData() (string, string, []opts.ScatterData, error) {
 	if !(2 <= len(d.Labels) && len(d.Labels) <= 3) {
-		return "", nil, "", nil, fmt.Errorf("cannot map %d dimensions to [2,3]", len(d.Labels))
+		return "", "", nil, fmt.Errorf("cannot map %d dimensions to [2,3]", len(d.Labels))
 	}
 	d = d.weighXYasZ()
 
-	xs := make([]float64, 0)
-	for i := range d.Points {
-		xs = append(xs, d.Points[i][0])
-	}
-	slices.Sort(xs)
-	xs = slices.Compact(xs)
-
 	zs := make([]float64, 0)
 	for i := range d.Points {
 		zs = append(zs, d.Points[i][2])
@@ -128,19 +121,17 @@ func (d Data) AsScatterData() (string, []float64, string, []opts.ScatterData, er
 	}
 	log.Printf("d=%+v zmin=%v zmax=%v zrange=%v", d.Points, zmin, zmax, zrange)
 
-	ys := make([]opts.ScatterData, 0)
+	result := make([]opts.ScatterData, 0)
-	for i := range xs {
+	for i := range d.Points {
-		for j := range d.Points {
+		x := d.Points[i][0]
-			x := d.Points[j][0]
+		y := d.Points[i][1]
-			if x == xs[i] {
+		z := d.Points[i][2]
-				ys = append(ys, opts.ScatterData{
+		result = append(result, opts.ScatterData{
-					Value:      d.Points[j][1],
+			Value:      []float64{x, y},
-					SymbolSize: d.Weight.Floor + int((float64(d.Weight.Range)*(d.Points[j][2]-zmin))/zrange),
+			SymbolSize: d.Weight.Floor + int((float64(d.Weight.Range)*(z-zmin))/zrange),
-				})
+		})
-			}
-		}
 	}
-	return d.Labels[0], xs, d.Labels[1], ys, nil
+	return d.Labels[0], d.Labels[1], result, nil
 }
 
 func (d Data) weighXYasZ() Data {

main.go

@@ -27,12 +27,11 @@ func run(ctx context.Context) error {
 	}
 	log.Printf("%+v", config)
 
-	x, xs, y, ys, err := config.Data.AsScatterData()
+	x, y, data, err := config.Data.AsScatterData()
 	if err != nil {
 		return err
 	}
-	log.Printf("%s: %v", x, xs)
+	log.Printf("(%s, %s) = %v", x, y, data)
-	log.Printf("%s: %v", y, ys)
 
 	scatter := charts.NewScatter()
 	scatter.SetGlobalOptions(charts.WithTitleOpts(opts.Title{
@@ -50,8 +49,7 @@ func run(ctx context.Context) error {
 		NameLocation: "middle",
 		NameGap:      config.Data.Weight.Floor + config.Data.Weight.Range,
 	}))
-	scatter.SetXAxis(xs).
+	scatter.AddSeries(y, data)
-		AddSeries(y, ys)
 
 	buff := bytes.NewBuffer(nil)
 	if err := scatter.Render(buff); err != nil {