// Plot draws the QuartPlot on Canvas c and Plot plt.
func (b *QuartPlot) Plot(c draw.Canvas, plt *plot.Plot) {
if b.Horizontal {
b := &horizQuartPlot{b}
b.Plot(c, plt)
return
}
trX, trY := plt.Transforms(&c)
x := trX(b.Location)
if !c.ContainsX(x) {
return
}
x += b.Offset
med := draw.Point{X: x, Y: 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: x, Y: y})
}
}
}
func (b horizQuartPlot) 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 := draw.Point{X: trX(b.Median), Y: y}
q1 := trX(b.Quartile1)
q3 := trX(b.Quartile3)
aLow := trX(b.AdjLow)
aHigh := trX(b.AdjHigh)
c.StrokeLine2(b.WhiskerStyle, aHigh, y, q3, y)
if c.ContainsX(med.X) {
c.DrawGlyphNoClip(b.MedianStyle, med)
}
c.StrokeLine2(b.WhiskerStyle, aLow, y, q1, y)
ostyle := b.MedianStyle
ostyle.Radius = b.MedianStyle.Radius / 2
for _, out := range b.Outside {
x := trX(b.Value(out))
if c.ContainsX(x) {
c.DrawGlyphNoClip(ostyle, draw.Point{X: x, Y: y})
}
}
}
// Plot draws the BoxPlot on Canvas c and Plot plt.
func (b *BoxPlot) Plot(c draw.Canvas, plt *plot.Plot) {
if b.Horizontal {
b := &horizBoxPlot{b}
b.Plot(c, plt)
return
}
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: x, Y: y})
}
}
}
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: x, Y: y})
}
}
}