Adding upstream version 2.1.2.

Signed-off-by: Daniel Baumann <daniel@debian.org>

examples/custom_ticks/main.go

@@ -0,0 +1,42 @@
+package main
+
+//go:generate go run main.go
+
+import (
+	"os"
+
+	"github.com/wcharczuk/go-chart/v2"
+)
+
+func main() {
+	/*
+	   In this example we set a custom set of ticks to use for the y-axis. It can be (almost) whatever you want, including some custom labels for ticks.
+	   Custom ticks will supercede a custom range, which will supercede automatic generation based on series values.
+	*/
+
+	graph := chart.Chart{
+		YAxis: chart.YAxis{
+			Range: &chart.ContinuousRange{
+				Min: 0.0,
+				Max: 4.0,
+			},
+			Ticks: []chart.Tick{
+				{Value: 0.0, Label: "0.00"},
+				{Value: 2.0, Label: "2.00"},
+				{Value: 4.0, Label: "4.00"},
+				{Value: 6.0, Label: "6.00"},
+				{Value: 8.0, Label: "Eight"},
+				{Value: 10.0, Label: "Ten"},
+			},
+		},
+		Series: []chart.Series{
+			chart.ContinuousSeries{
+				XValues: []float64{1.0, 2.0, 3.0, 4.0, 5.0},
+				YValues: []float64{1.0, 2.0, 3.0, 4.0, 5.0},
+			},
+		},
+	}
+	f, _ := os.Create("output.png")
+	defer f.Close()
+	graph.Render(chart.PNG, f)
+}