package main import ( "bytes" "log" "os" "git.gutmet.org/go-chart.git" ) func main() { var b float64 b = 1000 ts1 := chart.ContinuousSeries{ //TimeSeries{ Name: "Time Series", Style: chart.StyleShow(), XValues: []float64{10 * b, 20 * b, 30 * b, 40 * b, 50 * b, 60 * b, 70 * b, 80 * b}, YValues: []float64{1.0, 2.0, 30.0, 4.0, 50.0, 6.0, 7.0, 88.0}, } ts2 := chart.ContinuousSeries{ //TimeSeries{ Style: chart.Style{ Show: true, StrokeColor: chart.GetDefaultColor(1), }, XValues: []float64{10 * b, 20 * b, 30 * b, 40 * b, 50 * b, 60 * b, 70 * b, 80 * b}, YValues: []float64{15.0, 52.0, 30.0, 42.0, 50.0, 26.0, 77.0, 38.0}, } graph := chart.Chart{ XAxis: chart.XAxis{ Name: "The XAxis", NameStyle: chart.StyleShow(), Style: chart.StyleShow(), ValueFormatter: chart.TimeMinuteValueFormatter, //TimeHourValueFormatter, }, YAxis: chart.YAxis{ Name: "The YAxis", NameStyle: chart.StyleShow(), Style: chart.StyleShow(), }, Series: []chart.Series{ ts1, ts2, }, } buffer := bytes.NewBuffer([]byte{}) err := graph.Render(chart.PNG, buffer) if err != nil { log.Fatal(err) } fo, err := os.Create("output.png") if err != nil { panic(err) } if _, err := fo.Write(buffer.Bytes()); err != nil { panic(err) } }