ZacharyZhang-NY
596c62e026
Bars, lines, areas, pies, donuts, radar, histogram, scatter, bubbles, heatmaps, gauge, bullet, funnel, waterfall, treemap, candles, box plots, steps, rings, legend, axis, crosshair, polar area, pyramid, spectrum bars and win-loss strips, each drawn dot by dot. Ticks follow 1-2-5 steps and print as precisely as their step needs; a label row uses micro letters or the pixel font as a whole. Descriptions carry the data in numbers. Bad data panics.
29 lines
787 B
Go
29 lines
787 B
Go
package chart
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import (
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"github.com/egoist/mygo/ui"
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"git.zacharyzhang.com/ZacharyZhang-NY/8bitMyGoUI/pixel"
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)
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type ScatterPlotOptions struct {
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// Width and Height are dots; zeros mean 160 by 80.
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Width, Height int
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Slot pixel.Slot
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}
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// ScatterPlot puts each point as a 2×2 square.
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func ScatterPlot(c *ui.Context, text string, points []Point, o ScatterPlotOptions) *ui.Element {
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k := pixel.K(c)
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w, h := size("ScatterPlot", o.Width, o.Height, 160, 80)
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f := fitPoints(points, w, h, 2)
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ink := pick(o.Slot, 0)
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return ui.Box(c).Size(k.D(w), k.D(h)).Role(ui.RoleImage).Label(text).Description(where(points, false)).Draw(func(pt *ui.Painter, r ui.Rect) {
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g := k.Canvas(pt, r)
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f.grid(g)
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for _, p := range points {
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g.Rect(f.ax(p.X), f.at(p.Y)-1, 2, 2, ink)
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}
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})
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}
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