Line chart

@line.Line(line.Config{
  Label: "Basic line chart with one missing Email observation",
  Title: line.Title{Text: "Line", FontSize: 16},
  Labels: []string{"Mon", "Tue", "Wed", "Thu", "Fri", "Sat", "Sun"},
  Series: []line.Series{
    {Name: "Email", Points: []line.Point{{Value: 120}, {Value: 132}, {Value: 101}, {Missing: true}, {Value: 90}, {Value: 230}, {Value: 210}}},
    {Name: "Union Ads", Values: []float64{220, 182, 191, 234, 290, 330, 310}},
    {Name: "Video Ads", Values: []float64{150, 232, 201, 154, 190, 330, 410}},
    {Name: "Direct", Values: []float64{320, 332, 301, 334, 390, 330, 320}},
    {Name: "Search Engine", Values: []float64{820, 932, 901, 934, 1290, 1330, 1320}},
  },
  Legend: line.LegendOptions{Padding: line.Padding{Left: 100}},
  Symbol: line.Symbol{Shape: line.SymbolCircle}, StrokeWidth: 1.2,
  Width: 600, Height: 400,
})

@line.Line(line.Config{
  Label: "Line series with distinct point symbols",
  Labels: []string{"Mon", "Tue", "Wed", "Thu", "Fri", "Sat", "Sun"},
  Series: []line.Series{
    {Name: "Email", Values: email, Symbol: line.Symbol{Shape: line.SymbolCircle}},
    {Name: "Union Ads", Values: unionAds, Symbol: line.Symbol{Shape: line.SymbolDiamond}},
    {Name: "Video Ads", Values: videoAds, Symbol: line.Symbol{Shape: line.SymbolSquare}},
    {Name: "Direct", Values: direct, Symbol: line.Symbol{Shape: line.SymbolDot}},
  },
  StrokeWidth: 1.2,
})

@line.Line(line.Config{
  Label: "Bold smoothed line series",
  Labels: weekLabels,
  Series: series,
  Legend: line.LegendOptions{Hidden: true},
  Symbol: line.Symbol{Shape: line.SymbolNone},
  StrokeWidth: 4,
  SmoothingTension: 0.9,
})

references := line.References{
  Average: true, Maximum: true,
  Format: line.ValueFormatHumanized, Decimals: 1,
}
@line.Line(line.Config{
  Label: "Line series with average and maximum references",
  Labels: weekLabels,
  Series: []line.Series{
    {Name: "Email", Values: email, References: references},
    {Name: "Direct", Values: direct, References: references},
    {Name: "Search Engine", Values: searchEngine, References: references},
  },
  Padding: line.Padding{Top: 20, Right: 48, Bottom: 20, Left: 20},
})

minimum := 0.0
noGap := false

@line.Line(line.Config{
  Label: "Line",
  Title: line.Title{Text: "Line"},
  Labels: []string{"Mon", "Tue", "Wed", "Thu", "Fri", "Sat", "Sun"},
  Series: []line.Series{{Name: "Email", Values: []float64{120, 132, 101, 134, 90, 230, 210}}},
  Area: line.AreaOptions{Enabled: true, Opacity: 150.0 / 255.0},
  XAxis: line.CategoryAxisOptions{BoundaryGap: &noGap},
  Legend: line.LegendOptions{Padding: line.Padding{Top: 5, Bottom: 10}},
  YAxes: []line.Axis{{Min: &minimum}},
  Width: 600,
  Height: 400,
})

noGap := false
labels := line.DataLabelOptions{Show: true, Format: line.ValueFormatHumanized, Decimals: 1, TrailingZeros: true}
maximum := line.References{Maximum: true, PointPrefix: "Max:", PointSize: 30}
@line.Line(line.Config{
  Label: "Stacked line contributions",
  Labels: []string{"1", "2", "3", "4", "5", "6", "7", "8"},
  Series: []line.Series{
    {Name: "A", Values: []float64{1.9, 23.2, 25.6, 102.6, 142.2, 32.6, 20, 2.3}, Labels: labels, References: maximum},
    {Name: "B", Values: []float64{12, 26.4, 28.7, 144.6, 122.2, 48.7, 18.8, 13.3}, Labels: labels, References: maximum},
    {Name: "C", Values: []float64{80, 40.4, 28.4, 48.8, 24.4, 24.2, 40.8, 80.8}, Labels: labels, References: maximum},
  },
  Stacked: true, XAxis: line.CategoryAxisOptions{BoundaryGap: &noGap},
  YAxes: []line.Axis{{Title: "A+B+C Sum", TitleFontSize: 12, LabelFontSize: 8}},
})

withGapValue := true
withoutGapValue := false
withGap := line.Config{
  Label: "Boundary Gap", Title: line.Title{Text: "Boundary Gap"},
  Labels: []string{"A", "B", "C", "D", "E", "F"}, Series: series,
  XAxis: line.CategoryAxisOptions{BoundaryGap: &withGapValue},
}
withoutGap := withGap
withoutGap.Label = "Boundary Gap Disabled"
withoutGap.Title.Text = "Boundary Gap Disabled"
withoutGap.XAxis.BoundaryGap = &withoutGapValue

@line.Line(withGap)
@line.Line(withoutGap)

@line.Line(line.Config{
  Label: "Dual Axis Line",
  Title: line.Title{Text: "Dual Axis Line"},
  Labels: []string{"A", "B", "C", "D", "E", "F", "G"},
  Series: []line.Series{
    {Name: "Left Series", Values: []float64{120, 132, 101, 134, 90, 230, 210}},
    {Name: "Right Series", Values: []float64{820, 932, 901, 934, 1290, 1330, 1320}, YAxisIndex: 1},
  },
  YAxes: []line.Axis{{}, {}},
  Width: 600,
  Height: 400,
})