9db80d815b
Adds valid-votes denominators to the map bundle, a Total vs % dos válidos selector with fixed 0–100% coloring, and readout/legend alignment via scaleMax; updates roadmap and post-simplify debt docs.
64 lines
2.8 KiB
TypeScript
64 lines
2.8 KiB
TypeScript
/** Light muted rose → campaign primary #c51414 */
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export const choroplethGradientStart = { r: 254, g: 226, b: 226 } as const
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export const choroplethGradientEnd = { r: 197, g: 20, b: 20 } as const
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export const choroplethGradientCss = `linear-gradient(to right, rgb(${choroplethGradientStart.r} ${choroplethGradientStart.g} ${choroplethGradientStart.b}), rgb(${choroplethGradientEnd.r} ${choroplethGradientEnd.g} ${choroplethGradientEnd.b}))`
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/** Sequential fill for campaign choropleth maps (primary red scale). */
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export const choroplethFillColor = (value: number, max: number): string => {
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if (value <= 0 || max <= 0) return '#f4f4f5'
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const ratio = Math.min(1, value / max)
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const start = choroplethGradientStart
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const end = choroplethGradientEnd
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const r = Math.round(start.r + (end.r - start.r) * ratio)
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const g = Math.round(start.g + (end.g - start.g) * ratio)
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const b = Math.round(start.b + (end.b - start.b) * ratio)
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return `rgb(${r}, ${g}, ${b})`
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}
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export const choroplethMaxValue = (values: Record<string, number>): number => {
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const entries = Object.values(values).filter((value) => value > 0)
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return entries.length > 0 ? Math.max(...entries) : 0
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}
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/**
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* Diverging comparison scale (product decision 2026-07-20): campaign red where
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* Solla leads, white at the tie, blue where the compared candidate leads.
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*/
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export const divergingBlueEnd = { r: 30, g: 64, b: 175 } as const
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const white = { r: 255, g: 255, b: 255 } as const
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export const divergingFillColor = (diff: number, maxAbs: number): string => {
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if (maxAbs <= 0 || diff === 0) return `rgb(${white.r}, ${white.g}, ${white.b})`
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const ratio = Math.min(1, Math.abs(diff) / maxAbs)
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const end = diff > 0 ? choroplethGradientEnd : divergingBlueEnd
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const r = Math.round(white.r + (end.r - white.r) * ratio)
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const g = Math.round(white.g + (end.g - white.g) * ratio)
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const b = Math.round(white.b + (end.b - white.b) * ratio)
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return `rgb(${r}, ${g}, ${b})`
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}
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export const divergingGradientCss = `linear-gradient(to right, rgb(${divergingBlueEnd.r} ${divergingBlueEnd.g} ${divergingBlueEnd.b}), rgb(255 255 255), rgb(${choroplethGradientEnd.r} ${choroplethGradientEnd.g} ${choroplethGradientEnd.b}))`
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export const choroplethMaxAbsValue = (values: Record<string, number>): number => {
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const entries = Object.values(values).map((value) => Math.abs(value))
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return entries.length > 0 ? Math.max(...entries) : 0
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}
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/** Share of valid votes per geography (0–1). Omits entries with no valid denominator or zero votes. */
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export const computeValidVoteShares = (
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votes: Record<string, number>,
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validVotes: Record<string, number>,
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): Record<string, number> => {
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const shares: Record<string, number> = {}
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for (const [code, voteCount] of Object.entries(votes)) {
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const valid = validVotes[code]
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if (valid > 0 && voteCount > 0) {
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shares[code] = voteCount / valid
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}
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}
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return shares
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}
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