Beispiel #1
0
func (b *QuartPlot) Plot(c draw.Canvas, plt *plot.Plot) {
	trX, trY := plt.Transforms(&c)
	x := trX(b.Location)
	if !c.ContainsX(x) {
		return
	}
	x += b.Offset

	med := draw.Point{x, trY(b.Median)}
	q1 := trY(b.Quartile1)
	q3 := trY(b.Quartile3)
	aLow := trY(b.AdjLow)
	aHigh := trY(b.AdjHigh)

	c.StrokeLine2(b.WhiskerStyle, x, aHigh, x, q3)
	if c.ContainsY(med.Y) {
		c.DrawGlyphNoClip(b.MedianStyle, med)
	}
	c.StrokeLine2(b.WhiskerStyle, x, aLow, x, q1)

	ostyle := b.MedianStyle
	ostyle.Radius = b.MedianStyle.Radius / 2
	for _, out := range b.Outside {
		y := trY(b.Value(out))
		if c.ContainsY(y) {
			c.DrawGlyphNoClip(ostyle, draw.Point{x, y})
		}
	}
}
Beispiel #2
0
func (b HorizBoxPlot) Plot(c draw.Canvas, plt *plot.Plot) {
	trX, trY := plt.Transforms(&c)
	y := trY(b.Location)
	if !c.ContainsY(y) {
		return
	}
	y += b.Offset

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

	box := c.ClipLinesX([]draw.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},
	})
	c.StrokeLines(b.BoxStyle, box...)

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

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

	for _, out := range b.Outside {
		x := trX(b.Value(out))
		if c.ContainsX(x) {
			c.DrawGlyphNoClip(b.GlyphStyle, draw.Point{x, y})
		}
	}
}
Beispiel #3
0
func (b *BoxPlot) Plot(c draw.Canvas, plt *plot.Plot) {
	trX, trY := plt.Transforms(&c)
	x := trX(b.Location)
	if !c.ContainsX(x) {
		return
	}
	x += b.Offset

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

	box := c.ClipLinesY([]draw.Point{
		{x - b.Width/2, q1},
		{x - b.Width/2, q3},
		{x + b.Width/2, q3},
		{x + b.Width/2, q1},
		{x - b.Width/2 - b.BoxStyle.Width/2, q1},
	})
	c.StrokeLines(b.BoxStyle, box...)

	medLine := c.ClipLinesY([]draw.Point{
		{x - b.Width/2, med},
		{x + b.Width/2, med},
	})
	c.StrokeLines(b.MedianStyle, medLine...)

	cap := b.CapWidth / 2
	whisks := c.ClipLinesY([]draw.Point{{x, q3}, {x, aHigh}},
		[]draw.Point{{x - cap, aHigh}, {x + cap, aHigh}},
		[]draw.Point{{x, q1}, {x, aLow}},
		[]draw.Point{{x - cap, aLow}, {x + cap, aLow}})
	c.StrokeLines(b.WhiskerStyle, whisks...)

	for _, out := range b.Outside {
		y := trY(b.Value(out))
		if c.ContainsY(y) {
			c.DrawGlyphNoClip(b.GlyphStyle, draw.Point{x, y})
		}
	}
}
Beispiel #4
0
// draw draws the axis along the left side of a draw.Canvas.
func (a *verticalAxis) draw(c draw.Canvas) {
	x := c.Min.X
	if a.Label.Text != "" {
		x += a.Label.Height(a.Label.Text)
		c.Push()
		c.Rotate(math.Pi / 2)
		c.FillText(a.Label.TextStyle, c.Center().Y, -x, -0.5, 0, a.Label.Text)
		c.Pop()
		x += -a.Label.Font.Extents().Descent
	}
	marks := a.Tick.Marker.Ticks(a.Min, a.Max)
	if w := tickLabelWidth(a.Tick.Label, marks); len(marks) > 0 && w > 0 {
		x += w
	}
	major := false
	for _, t := range marks {
		y := c.Y(a.Norm(t.Value))
		if !c.ContainsY(y) || t.IsMinor() {
			continue
		}
		c.FillText(a.Tick.Label, x, y, -1, -0.5, t.Label)
		major = true
	}
	if major {
		x += a.Tick.Label.Width(" ")
	}
	if a.drawTicks() && len(marks) > 0 {
		len := a.Tick.Length
		for _, t := range marks {
			y := c.Y(a.Norm(t.Value))
			if !c.ContainsY(y) {
				continue
			}
			start := t.lengthOffset(len)
			c.StrokeLine2(a.Tick.LineStyle, x+start, y, x+len, y)
		}
		x += len
	}
	c.StrokeLine2(a.LineStyle, x, c.Min.Y, x, c.Max.Y)
}