AddStackedAreaPlots adds stacked area plot plotters to a plot. The variadic arguments must be either strings or plotter.Valuers. Each valuer adds a stacked area plot to the plot below the stacked area plots added before it. If a plotter.Valuer is immediately preceeded by a string then the string v
(plt *plot.Plot, xs plotter.Valuer, vs ...any)
| 37 | // If an error occurs then none of the plotters are added |
| 38 | // to the plot, and the error is returned. |
| 39 | func AddStackedAreaPlots(plt *plot.Plot, xs plotter.Valuer, vs ...any) error { |
| 40 | var ps []plot.Plotter |
| 41 | var names []item |
| 42 | name := "" |
| 43 | var i int |
| 44 | |
| 45 | for _, v := range vs { |
| 46 | switch t := v.(type) { |
| 47 | case string: |
| 48 | name = t |
| 49 | |
| 50 | case plotter.Valuer: |
| 51 | if xs.Len() != t.Len() { |
| 52 | return errors.New("X/Y length mismatch") |
| 53 | } |
| 54 | |
| 55 | // Make a line plotter and set its style. |
| 56 | l, err := plotter.NewLine(combineXYs{xs: xs, ys: t}) |
| 57 | if err != nil { |
| 58 | return err |
| 59 | } |
| 60 | |
| 61 | l.LineStyle.Width = vg.Points(0) |
| 62 | color := Color(i) |
| 63 | i++ |
| 64 | l.FillColor = color |
| 65 | |
| 66 | ps = append(ps, l) |
| 67 | |
| 68 | if name != "" { |
| 69 | names = append(names, item{name: name, value: l}) |
| 70 | name = "" |
| 71 | } |
| 72 | |
| 73 | default: |
| 74 | panic(fmt.Sprintf("plotutil: AddStackedAreaPlots handles strings and plotter.Valuers, got %T", t)) |
| 75 | } |
| 76 | } |
| 77 | |
| 78 | plt.Add(ps...) |
| 79 | for _, v := range names { |
| 80 | plt.Legend.Add(v.name, v.value) |
| 81 | } |
| 82 | |
| 83 | return nil |
| 84 | } |
| 85 | |
| 86 | // AddBoxPlots adds box plot plotters to a plot and |
| 87 | // sets the X axis of the plot to be nominal. |