Example #1
0
// Plot implements the Plotter interface, drawing labels.
func (e *XErrorBars) Plot(da plot.DrawArea, p *plot.Plot) {
	trX, trY := p.Transforms(&da)
	for i, err := range e.XErrors {
		y := trY(e.XYs[i].Y)
		xlow := trX(e.XYs[i].X - math.Abs(err.Low))
		xhigh := trX(e.XYs[i].X + math.Abs(err.High))

		bar := da.ClipLinesX([]plot.Point{{xlow, y}, {xhigh, y}})
		da.StrokeLines(e.LineStyle, bar...)
		e.drawCap(&da, xlow, y)
		e.drawCap(&da, xhigh, y)
	}
}
Example #2
0
func (b HorizBoxPlot) Plot(da plot.DrawArea, plt *plot.Plot) {
	trX, trY := plt.Transforms(&da)
	y := trY(b.Location)
	if !da.ContainsY(y) {
		return
	}

	med := trX(b.Median)
	q1 := trX(b.Quartile1)
	q3 := trX(b.Quartile3)
	aLow := trX(b.AdjLow)
	aHigh := trX(b.AdjHigh)

	box := da.ClipLinesX([]plot.Point{
		{q1, y - b.Width/2},
		{q3, y - b.Width/2},
		{q3, y + b.Width/2},
		{q1, y + b.Width/2},
		{q1, y - b.Width/2 - b.BoxStyle.Width/2},
	})
	da.StrokeLines(b.BoxStyle, box...)

	medLine := da.ClipLinesX([]plot.Point{
		{med, y - b.Width/2},
		{med, y + b.Width/2},
	})
	da.StrokeLines(b.MedianStyle, medLine...)

	cap := b.CapWidth / 2
	whisks := da.ClipLinesX([]plot.Point{{q3, y}, {aHigh, y}},
		[]plot.Point{{aHigh, y - cap}, {aHigh, y + cap}},
		[]plot.Point{{q1, y}, {aLow, y}},
		[]plot.Point{{aLow, y - cap}, {aLow, y + cap}})
	da.StrokeLines(b.WhiskerStyle, whisks...)

	for _, out := range b.Outside {
		x := trX(b.Value(out))
		da.DrawGlyph(b.GlyphStyle, plot.Point{x, y})
	}
}