Пример #1
0
// AddYErrorBars adds YErrorBars to a plot.
// The variadic arguments must be
// of type plotter.XYer, and plotter.YErrorer.
// Each errorer is added to the plot the color from
// the Colors function corresponding to its position
// in the argument list.
//
// If an error occurs then none of the plotters are added
// to the plot, and the error is returned.
func AddYErrorBars(plt *plot.Plot, es ...interface {
	plotter.XYer
	plotter.YErrorer
}) error {
	var ps []plot.Plotter
	for i, e := range es {
		bars, err := plotter.NewYErrorBars(e)
		if err != nil {
			return err
		}
		bars.Color = Color(i)
		ps = append(ps, bars)
	}
	plt.Add(ps...)
	return nil
}
Пример #2
0
// AddErrorBars adds XErrorBars and YErrorBars
// to a plot.  The variadic arguments must be
// of type plotter.XYer, and must be either a
// plotter.XErrorer, plotter.YErrorer, or both.
// Each errorer is added to the plot the color from
// the Colors function corresponding to its position
// in the argument list.
//
// If an error occurs then none of the plotters are added
// to the plot, and the error is returned.
func AddErrorBars(plt *plot.Plot, vs ...interface{}) error {
	var ps []plot.Plotter
	for i, v := range vs {
		added := false

		if xerr, ok := v.(interface {
			plotter.XYer
			plotter.XErrorer
		}); ok {
			e, err := plotter.NewXErrorBars(xerr)
			if err != nil {
				return err
			}
			e.Color = Color(i)
			ps = append(ps, e)
			added = true
		}

		if yerr, ok := v.(interface {
			plotter.XYer
			plotter.YErrorer
		}); ok {
			e, err := plotter.NewYErrorBars(yerr)
			if err != nil {
				return err
			}
			e.Color = Color(i)
			ps = append(ps, e)
			added = true
		}

		if added {
			continue
		}
		panic(fmt.Sprintf("AddErrorBars expects plotter.XErrorer or plotter.YErrorer, got %T", v))
	}
	plt.Add(ps...)
	return nil
}