better default handling around final value labels.

testserver/main.go

@@ -17,31 +17,34 @@ func main() {
 		rc.Response.Header().Set("Content-Type", "image/png")
 		now := time.Now()
 		c := chart.Chart{
-			Title: "Stocks Bruh.",
+			Title: "A Test Chart",
 			TitleStyle: chart.Style{
 				Show: true,
 			},
-			Width:  1024,
-			Height: 400,
-			Canvas: chart.Style{
-				Padding: chart.Box{
-					Right:  40,
-					Bottom: 40,
-				},
-			},
+			Width:  800,
+			Height: 380,
 			Axes: chart.Style{
 				Show:        true,
 				StrokeWidth: 1.0,
 			},
+			YRange: chart.Range{
+				Min: 0.0,
+				Max: 7.0,
+			},
 			FinalValueLabel: chart.Style{
 				Show: true,
 			},
 			Series: []chart.Series{
 				chart.TimeSeries{
-					Name:    "goog",
+					Name:    "a",
 					XValues: []time.Time{now.AddDate(0, 0, -4), now.AddDate(0, 0, -3), now.AddDate(0, 0, -2), now.AddDate(0, 0, -1)},
 					YValues: []float64{2.5, 5.0, 2.0, 3.0},
 				},
+				chart.TimeSeries{
+					Name:    "b",
+					XValues: []time.Time{now.AddDate(0, 0, -4), now.AddDate(0, 0, -3), now.AddDate(0, 0, -2), now.AddDate(0, 0, -1)},
+					YValues: []float64{6.0, 5.0, 4.0, 1.0},
+				},
 			},
 		}