# Line charts > Four hand-drawn SVG line charts — multi-series, single metric, period comparison and annotated steps — that reveal left to right, morph with springs and read out values on hover or arrow keys. - Collection: Examples - Tier: free - Docs: https://geturui.com/docs/line-charts - Install: `npx shadcn@latest add @geturui/line-charts` - Dependencies: motion, lucide-react ## Variants ### Multi-series Up to four series, volt first and the rest neutral or dashed; legend toggles rescale the axis with a spring morph and the crosshair reads every visible line. Install: `npx shadcn@latest add @geturui/line-charts-multi-series` ```tsx import { MultiSeriesLineChart } from "@/components/examples/line-charts/multi-series"; export function Platforms() { return ( ); } ``` | Prop | Type | Default | Description | |---|---|---|---| | title / subtitle | `string` | — | Heading and caption. | | labels | `string[]` | — | X-axis labels, one per point. | | series | `LineSeries[]` | — | { id, label, values }. The first series is primary. | | formatValue | `(n: number) => string` | — | Formats tooltip values. | | formatTick | `(n: number) => string` | — | Formats y-axis ticks. | ### Gradient metric One metric under a volt gradient with labelled peak and low markers, an average guide, a glowing latest point and a headline that follows the crosshair. Install: `npx shadcn@latest add @geturui/line-charts-gradient-metric` ```tsx import { GradientMetricChart } from "@/components/examples/line-charts/gradient-metric"; export function Signups() { return ; } ``` | Prop | Type | Default | Description | |---|---|---|---| | title | `string` | "Daily signups" | Metric name. | | values | `number[]` | — | Series, oldest first. | | labels | `string[]` | — | One label per value. | | formatValue | `(n: number) => string` | — | Formats headline, ticks and markers. | | caption | `string` | "Last 30 days" | Caption under the headline. | ### Period comparison This period in solid volt against the last in dashed neutral, the gap shaded, with week, month and quarter tabs that morph both lines together. Install: `npx shadcn@latest add @geturui/line-charts-period-comparison` ```tsx import { PeriodComparisonChart } from "@/components/examples/line-charts/period-comparison"; export function Bookings() { return ( ); } ``` | Prop | Type | Default | Description | |---|---|---|---| | title | `string` | "Cumulative bookings" | Card heading. | | periods | `ComparisonPeriod[]` | — | { key, labels, current, previous, previousLabel }. Equal point counts let lines morph. | | defaultPeriod | `string` | "Month" | Initially selected tab. | | formatValue | `(n: number) => string` | — | Formats values and ticks. | ### Step with annotations A step line for values that change in jumps, a dashed plan limit and numbered notes that pop a callout on hover or focus and step with arrow keys. Install: `npx shadcn@latest add @geturui/line-charts-step-annotations` ```tsx import { StepAnnotationsChart } from "@/components/examples/line-charts/step-annotations"; export function Seats() { return ( ); } ``` | Prop | Type | Default | Description | |---|---|---|---| | title / subtitle | `string` | — | Heading and caption. | | labels | `string[]` | — | One label per step. | | values | `number[]` | — | Value held from each label until the next. | | annotations | `StepAnnotation[]` | — | { index, title, body } notes pinned to points. | | limit | `number` | 40 | Dashed ceiling line. | | unit | `string` | "seats" | Unit used in copy. | ## Accessibility - Each chart is role="img" with a summary of its range, extremes or comparison; the plot area is focusable and arrow keys move the crosshair with a polite readout. - Legend chips and period tabs are buttons with aria-pressed; annotation markers are buttons that step through with left and right arrows. - Axis labels are HTML, strokes stay crisp at any size, and reduced motion swaps the reveal and morphs for an instant render. ## Source ### components/examples/line-charts/multi-series.tsx ```tsx "use client"; import * as React from "react"; import { AnimatePresence, motion, useInView, useReducedMotion } from "motion/react"; import { cn } from "@/lib/utils"; export interface LineSeries { id: string; label: string; /** One value per label, oldest first. */ values: number[]; } export interface MultiSeriesLineChartProps { title?: string; subtitle?: string; /** X-axis labels, one per point. */ labels?: string[]; /** First series is the primary (volt); the rest render in neutral tones. */ series?: LineSeries[]; formatValue?: (n: number) => string; /** Formats the y-axis ticks. */ formatTick?: (n: number) => string; className?: string; } const LABELS = ["Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec", "Jan", "Feb", "Mar"]; const SERIES: LineSeries[] = [ { id: "web", label: "Web app", values: [18.2, 19.4, 21.1, 20.6, 22.8, 24.9, 26.3, 25.8, 28.4, 30.1, 31.7, 34.2] }, { id: "ios", label: "iOS", values: [9.1, 9.8, 10.4, 11.9, 12.2, 13.6, 14.1, 15.8, 16.3, 17.9, 18.4, 19.6] }, { id: "android", label: "Android", values: [6.4, 6.9, 7.2, 7.1, 8.0, 8.6, 9.3, 9.1, 10.2, 10.8, 11.6, 12.1] }, ]; const STYLES = [ { stroke: "var(--volt-ink)", width: 2.25, dash: undefined }, { stroke: "var(--ink-muted)", width: 1.75, dash: undefined }, { stroke: "var(--ink-subtle)", width: 1.75, dash: "5 4" }, { stroke: "var(--ink-subtle)", width: 1.5, dash: "1.5 3.5" }, ]; function niceTicks(max: number, count = 4) { const raw = Math.max(max, 1e-6) / count; const mag = 10 ** Math.floor(Math.log10(raw)); const step = [1, 2, 2.5, 5, 10].map((m) => m * mag).find((s) => s >= raw) ?? raw; return Array.from({ length: count + 1 }, (_, i) => i * step); } function smooth(pts: [number, number][]) { const f = (n: number) => n.toFixed(2); return pts .map((p, i) => { if (i === 0) return `M${f(p[0])},${f(p[1])}`; const a = pts[i - 2] ?? pts[i - 1]; const b = pts[i - 1]; const c = pts[i + 1] ?? p; return `C${f(b[0] + (p[0] - a[0]) / 6)},${f(b[1] + (p[1] - a[1]) / 6)} ${f(p[0] - (c[0] - b[0]) / 6)},${f(p[1] - (c[1] - b[1]) / 6)} ${f(p[0])},${f(p[1])}`; }) .join(""); } /** Multi-series line chart: legend toggles rescale the axis with a spring morph, and a crosshair reads every visible series on hover or arrow keys. */ export function MultiSeriesLineChart({ title = "Weekly active users", subtitle = "By platform, in thousands", labels = LABELS, series = SERIES, formatValue = (n) => `${n.toFixed(1)}k`, formatTick = (n) => (n ? `${n}k` : "0"), className, }: MultiSeriesLineChartProps) { const reduce = useReducedMotion() ?? false; const ref = React.useRef(null); const inView = useInView(ref, { once: true, margin: "-40px" }); const uid = React.useId().replace(/[^a-zA-Z0-9_-]/g, ""); const [hidden, setHidden] = React.useState>(new Set()); const [active, setActive] = React.useState(null); const n = labels.length; const visible = series.filter((s) => !hidden.has(s.id)); const ticks = niceTicks(Math.max(...visible.flatMap((s) => s.values), 0)); const top = ticks[ticks.length - 1] || 1; const xp = (i: number) => (n > 1 ? (i / (n - 1)) * 100 : 50); const yp = (v: number) => (1 - v / top) * 100; const spring = reduce ? { duration: 0 } : { type: "spring" as const, stiffness: 200, damping: 30 }; const toggle = (id: string) => setHidden((prev) => { const next = new Set(prev); if (next.has(id)) next.delete(id); else if (series.length - next.size > 1) next.add(id); return next; }); function onMove(e: React.PointerEvent) { const r = e.currentTarget.getBoundingClientRect(); setActive(Math.max(0, Math.min(n - 1, Math.round(((e.clientX - r.left) / r.width) * (n - 1))))); } function onKey(e: React.KeyboardEvent) { const map: Record = { ArrowLeft: -1, ArrowRight: 1 }; if (e.key in map) { e.preventDefault(); setActive((a) => Math.max(0, Math.min(n - 1, (a ?? n - 1) + map[e.key]))); } else if (e.key === "Home" || e.key === "End") { e.preventDefault(); setActive(e.key === "Home" ? 0 : n - 1); } else if (e.key === "Escape") setActive(null); } const summary = `${title}. ${series.map((s) => `${s.label} from ${formatValue(s.values[0] ?? 0)} to ${formatValue(s.values[n - 1] ?? 0)}`).join("; ")}.`; return (

{title}

{subtitle}

    {series.map((s, i) => { const on = !hidden.has(s.id); const st = STYLES[i % STYLES.length]; return (
  • toggle(s.id)} className={cn( "inline-flex h-7 items-center gap-1.5 rounded-full border px-2.5 text-[12px] font-medium outline-none transition-colors focus-visible:shadow-[var(--focus-ring)]", on ? "border-border-strong/40 bg-surface text-ink" : "border-dashed border-border text-ink-subtle", )} > {s.label}
    • ); })}
{ticks.map((t) => ( {formatTick(t)} ))}
setActive(null)} onFocus={() => setActive((a) => a ?? n - 1)} onBlur={() => setActive(null)} onKeyDown={onKey} className="relative h-52 touch-none rounded-xs outline-none focus-visible:shadow-[var(--focus-ring)] @md:h-60" > {ticks.map((t, i) => ( ))} {series.map((s, i) => { const st = STYLES[i % STYLES.length]; const d = smooth(s.values.map((v, k) => [xp(k), yp(v)])); return ( ); })} {active !== null && } {active !== null && series.map((s, i) => hidden.has(s.id) ? null : ( ), )} {active !== null && ( 55 ? "calc(-100% - 12px)" : "12px" }} className="pointer-events-none absolute top-1 z-10 min-w-36 rounded-sm border border-border bg-surface-raised px-2.5 py-2 text-xs shadow-md" >

{labels[active]}

{series.map((s, i) => hidden.has(s.id) ? null : (

{s.label} {formatValue(s.values[active] ?? 0)}

), )} )}
{labels.map((l, i) => ( {l} ))}

{active !== null ? `${labels[active]}: ${visible.map((s) => `${s.label} ${formatValue(s.values[active] ?? 0)}`).join(", ")}` : ""}

); } ``` ### components/examples/line-charts/gradient-metric.tsx ```tsx "use client"; import * as React from "react"; import { AnimatePresence, motion, useInView, useReducedMotion } from "motion/react"; import { ArrowDown, ArrowUp } from "lucide-react"; import { cn } from "@/lib/utils"; export interface GradientMetricChartProps { title?: string; /** One value per label, oldest first. */ values?: number[]; labels?: string[]; formatValue?: (n: number) => string; /** Caption under the headline value. */ caption?: string; className?: string; } const VALUES = [212, 198, 226, 241, 233, 219, 186, 204, 247, 262, 258, 241, 275, 289, 301, 284, 268, 296, 312, 334, 327, 309, 341, 358, 412, 376, 352, 369, 388, 394]; const LABELS = VALUES.map((_, i) => { const d = new Date(Date.UTC(2026, 8, 3 + i)); return d.toLocaleDateString("en-US", { month: "short", day: "numeric", timeZone: "UTC" }); }); function domain(min: number, max: number, count = 4) { const raw = Math.max(max - min, 1) / count; const mag = 10 ** Math.floor(Math.log10(raw)); const step = [1, 2, 2.5, 5, 10].map((m) => m * mag).find((s) => s >= raw) ?? raw; const lo = Math.floor(min / step) * step; const hi = Math.ceil(max / step) * step; return { lo, hi, ticks: Array.from({ length: Math.round((hi - lo) / step) + 1 }, (_, i) => lo + i * step) }; } function smooth(pts: [number, number][]) { const f = (n: number) => n.toFixed(2); return pts .map((p, i) => { if (i === 0) return `M${f(p[0])},${f(p[1])}`; const a = pts[i - 2] ?? pts[i - 1]; const b = pts[i - 1]; const c = pts[i + 1] ?? p; return `C${f(b[0] + (p[0] - a[0]) / 6)},${f(b[1] + (p[1] - a[1]) / 6)} ${f(p[0] - (c[0] - b[0]) / 6)},${f(p[1] - (c[1] - b[1]) / 6)} ${f(p[0])},${f(p[1])}`; }) .join(""); } /** Single-metric line with a volt gradient, labelled peak and low markers, an average guide and a crosshair readout on hover or arrow keys. */ export function GradientMetricChart({ title = "Daily signups", values = VALUES, labels = LABELS, formatValue = (n) => Math.round(n).toLocaleString("en-US"), caption = "Last 30 days", className, }: GradientMetricChartProps) { const reduce = useReducedMotion() ?? false; const ref = React.useRef(null); const inView = useInView(ref, { once: true, margin: "-40px" }); const uid = React.useId().replace(/[^a-zA-Z0-9_-]/g, ""); const [active, setActive] = React.useState(null); const n = values.length; const min = Math.min(...values); const max = Math.max(...values); const { lo, hi, ticks } = domain(min, max); const avg = values.reduce((a, b) => a + b, 0) / Math.max(n, 1); const iMin = values.indexOf(min); const iMax = values.indexOf(max); const xp = (i: number) => (n > 1 ? (i / (n - 1)) * 100 : 50); const yp = (v: number) => (1 - (v - lo) / (hi - lo || 1)) * 100; const pts = values.map((v, i) => [xp(i), yp(v)] as [number, number]); const line = smooth(pts); const last = values[n - 1] ?? 0; const change = values[0] ? (last - values[0]) / values[0] : 0; function onMove(e: React.PointerEvent) { const r = e.currentTarget.getBoundingClientRect(); setActive(Math.max(0, Math.min(n - 1, Math.round(((e.clientX - r.left) / r.width) * (n - 1))))); } function onKey(e: React.KeyboardEvent) { if (e.key === "ArrowLeft" || e.key === "ArrowRight") { e.preventDefault(); setActive((a) => Math.max(0, Math.min(n - 1, (a ?? n - 1) + (e.key === "ArrowRight" ? 1 : -1)))); } else if (e.key === "Home" || e.key === "End") { e.preventDefault(); setActive(e.key === "Home" ? 0 : n - 1); } else if (e.key === "Escape") setActive(null); } const marker = (i: number, kind: "Peak" | "Low") => ( 75 ? "right-0 translate-x-3" : xp(i) < 25 ? "left-0 -translate-x-3" : "-translate-x-1/2", )} > {kind} {formatValue(values[i] ?? 0)} · {labels[i]} ); return (

{title}

{formatValue(active === null ? last : values[active] ?? 0)}

{active === null ? caption : labels[active]}

= 0 ? "bg-volt-soft text-success" : "bg-surface text-danger")}> {change >= 0 ? : } {change >= 0 ? "Up" : "Down"} {Math.abs(change * 100).toFixed(1)}% over period

{ticks.map((t) => ( {formatValue(t)} ))}
setActive(null)} onFocus={() => setActive((a) => a ?? n - 1)} onBlur={() => setActive(null)} onKeyDown={onKey} className="relative h-48 touch-none rounded-xs outline-none focus-visible:shadow-[var(--focus-ring)] @md:h-56" > {ticks.map((t, i) => ( ))} {active !== null && } Avg {formatValue(avg)} {marker(iMax, "Peak")} {marker(iMin, "Low")} {active !== null && ( )}
{labels[0]} {labels[Math.floor((n - 1) / 2)]} {labels[n - 1]}

{active !== null ? `${labels[active]}: ${formatValue(values[active] ?? 0)}` : ""}

); } ``` ### components/examples/line-charts/period-comparison.tsx ```tsx "use client"; import * as React from "react"; import { AnimatePresence, motion, useInView, useReducedMotion } from "motion/react"; import { TrendingDown, TrendingUp } from "lucide-react"; import { cn } from "@/lib/utils"; export interface ComparisonPeriod { /** Tab label, e.g. "Month". */ key: string; /** Point labels, same length as the series. Every period should use the same point count so lines can morph. */ labels: string[]; current: number[]; previous: number[]; /** Wording for the comparison, e.g. "last month". */ previousLabel: string; } export interface PeriodComparisonChartProps { title?: string; periods?: ComparisonPeriod[]; defaultPeriod?: string; formatValue?: (n: number) => string; className?: string; } const cum = (xs: number[]) => xs.reduce((acc, x) => [...acc, (acc[acc.length - 1] ?? 0) + x], []); const PERIODS: ComparisonPeriod[] = [ { key: "Week", previousLabel: "last week", labels: ["Mon 9a", "Mon 6p", "Tue 9a", "Tue 6p", "Wed 9a", "Wed 6p", "Thu 9a", "Thu 6p", "Fri 9a", "Fri 6p", "Sat", "Sun"], current: cum([1.2, 1.6, 1.4, 1.9, 1.5, 2.1, 1.7, 2.4, 1.9, 2.2, 1.1, 0.9]), previous: cum([1.1, 1.3, 1.5, 1.4, 1.6, 1.7, 1.5, 1.9, 1.8, 2.0, 1.2, 1.0]) }, { key: "Month", previousLabel: "last month", labels: ["Sep 1", "Sep 4", "Sep 6", "Sep 9", "Sep 11", "Sep 14", "Sep 16", "Sep 19", "Sep 21", "Sep 24", "Sep 26", "Sep 29"], current: cum([5.2, 6.1, 5.8, 7.4, 6.6, 8.1, 7.2, 7.9, 6.8, 8.6, 7.7, 6.9]), previous: cum([5.6, 5.9, 6.2, 6.4, 6.0, 6.9, 6.5, 7.0, 6.3, 7.1, 6.8, 6.1]) }, { key: "Quarter", previousLabel: "last quarter", labels: ["W1", "W2", "W3", "W4", "W5", "W6", "W7", "W8", "W9", "W10", "W11", "W12"], current: cum([17.4, 18.2, 16.9, 19.6, 21.3, 20.1, 22.4, 21.8, 23.5, 24.2, 22.9, 25.7]), previous: cum([18.1, 18.6, 19.0, 18.4, 19.7, 20.3, 19.9, 20.8, 21.2, 20.6, 21.9, 22.4]) }, ]; function niceTop(max: number, count = 4) { const raw = Math.max(max, 1e-6) / count; const mag = 10 ** Math.floor(Math.log10(raw)); const step = [1, 2, 2.5, 5, 10].map((m) => m * mag).find((s) => s >= raw) ?? raw; return Array.from({ length: count + 1 }, (_, i) => i * step); } function smooth(pts: [number, number][], move = true) { const f = (n: number) => n.toFixed(2); return pts .map((p, i) => { if (i === 0) return `${move ? "M" : "L"}${f(p[0])},${f(p[1])}`; const a = pts[i - 2] ?? pts[i - 1]; const b = pts[i - 1]; const c = pts[i + 1] ?? p; return `C${f(b[0] + (p[0] - a[0]) / 6)},${f(b[1] + (p[1] - a[1]) / 6)} ${f(p[0] - (c[0] - b[0]) / 6)},${f(p[1] - (c[1] - b[1]) / 6)} ${f(p[0])},${f(p[1])}`; }) .join(""); } /** This period against the last: solid volt vs dashed neutral, the gap between them shaded, period tabs that morph both lines with a spring. */ export function PeriodComparisonChart({ title = "Cumulative bookings", periods = PERIODS, defaultPeriod = "Month", formatValue = (n) => `$${n.toFixed(1)}k`, className }: PeriodComparisonChartProps) { const reduce = useReducedMotion() ?? false; const ref = React.useRef(null); const inView = useInView(ref, { once: true, margin: "-40px" }); const uid = React.useId().replace(/[^a-zA-Z0-9_-]/g, ""); const [key, setKey] = React.useState(defaultPeriod); const [active, setActive] = React.useState(null); const p = periods.find((x) => x.key === key) ?? periods[0]; const n = p.labels.length; const ticks = niceTop(Math.max(...p.current, ...p.previous)); const top = ticks[ticks.length - 1] || 1; const xp = (i: number) => (n > 1 ? (i / (n - 1)) * 100 : 50); const yp = (v: number) => (1 - v / top) * 100; const cur = p.current.map((v, i) => [xp(i), yp(v)] as [number, number]); const prev = p.previous.map((v, i) => [xp(i), yp(v)] as [number, number]); const dCur = smooth(cur); const dPrev = smooth(prev); const dGap = `${dCur}${smooth([...prev].reverse(), false)}Z`; const spring = reduce ? { duration: 0 } : { type: "spring" as const, stiffness: 180, damping: 28 }; const total = p.current[n - 1] ?? 0; const before = p.previous[n - 1] ?? 0; const delta = before ? (total - before) / before : 0; const up = delta >= 0; function onMove(e: React.PointerEvent) { const r = e.currentTarget.getBoundingClientRect(); setActive(Math.max(0, Math.min(n - 1, Math.round(((e.clientX - r.left) / r.width) * (n - 1))))); } function onKey(e: React.KeyboardEvent) { if (e.key === "ArrowLeft" || e.key === "ArrowRight") { e.preventDefault(); setActive((a) => Math.max(0, Math.min(n - 1, (a ?? n - 1) + (e.key === "ArrowRight" ? 1 : -1)))); } else if (e.key === "Escape") setActive(null); } const a = active ?? null; const aCur = a !== null ? p.current[a] ?? 0 : 0; const aPrev = a !== null ? p.previous[a] ?? 0 : 0; return (

{title}

{formatValue(total)}

{up ? : } {up ? "Ahead" : "Behind"} {Math.abs(delta * 100).toFixed(1)}% vs {formatValue(before)} {p.previousLabel}

{periods.map((x) => ( ))}
{ticks.map((t, i) => ( {t ? formatValue(t).replace(".0k", "k") : "0"} ))}
setActive(null)} onFocus={() => setActive((v) => v ?? n - 1)} onBlur={() => setActive(null)} onKeyDown={onKey} className="relative h-48 touch-none rounded-xs outline-none focus-visible:shadow-[var(--focus-ring)] @md:h-56" > {ticks.map((_, i) => ( ))} {a !== null && } {a !== null && ( <> )} {a !== null && ( 55 ? "calc(-100% - 12px)" : "12px" }} className="pointer-events-none absolute top-1 z-10 min-w-40 rounded-sm border border-border bg-surface-raised px-2.5 py-2 text-xs shadow-md" >

{p.labels[a]}

This {p.key.toLowerCase()} {formatValue(aCur)}

Previous {formatValue(aPrev)}

= aPrev ? "text-success" : "text-danger")}> {aCur >= aPrev ? "+" : "−"} {formatValue(Math.abs(aCur - aPrev))}

)}
{p.labels.map((l, i) => i % 3 === 0 || i === n - 1 ? ( {l} ) : null, )}
This {p.key.toLowerCase()} {p.previousLabel.charAt(0).toUpperCase() + p.previousLabel.slice(1)}

{a !== null ? `${p.labels[a]}: ${formatValue(aCur)} this ${p.key.toLowerCase()}, ${formatValue(aPrev)} ${p.previousLabel}.` : ""}

); } ``` ### components/examples/line-charts/step-annotations.tsx ```tsx "use client"; import * as React from "react"; import { AnimatePresence, motion, useInView, useReducedMotion } from "motion/react"; import { cn } from "@/lib/utils"; export interface StepAnnotation { /** Index of the point the note belongs to. */ index: number; title: string; body: string; } export interface StepAnnotationsChartProps { title?: string; subtitle?: string; labels?: string[]; /** Value held from each label until the next. */ values?: number[]; annotations?: StepAnnotation[]; /** Optional plan limit drawn as a dashed ceiling. */ limit?: number; unit?: string; className?: string; } const LABELS = ["Oct", "Nov", "Dec", "Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep"]; const VALUES = [14, 14, 18, 18, 18, 31, 31, 34, 34, 27, 29, 38]; const NOTES: StepAnnotation[] = [ { index: 2, title: "Support team onboarded", body: "Four agents added for the holiday queue." }, { index: 5, title: "Design moved to the workspace", body: "Thirteen seats migrated from the old tool." }, { index: 9, title: "Contractors offboarded", body: "Seven guest seats released after the launch." }, { index: 11, title: "Annual plan renewed", body: "Limit raised to 40 seats at the new rate." }, ]; /** Step line for values that change in jumps, with numbered annotations you can hover, focus or step through to read what moved the line. */ export function StepAnnotationsChart({ title = "Active seats", subtitle = "Workspace members billed each month", labels = LABELS, values = VALUES, annotations = NOTES, limit = 40, unit = "seats", className, }: StepAnnotationsChartProps) { const reduce = useReducedMotion() ?? false; const ref = React.useRef(null); const inView = useInView(ref, { once: true, margin: "-40px" }); const uid = React.useId().replace(/[^a-zA-Z0-9_-]/g, ""); const [active, setActive] = React.useState(null); const btns = React.useRef<(HTMLButtonElement | null)[]>([]); const n = values.length; const top = Math.ceil((Math.max(...values, limit) * 1.1) / 10) * 10; const ticks = [0, top / 2, top]; const xp = (i: number) => (i / n) * 100; const yp = (v: number) => (1 - v / top) * 100; const d = values.map((v, i) => `${i ? `H${xp(i).toFixed(2)}V` : `M0,`}${yp(v).toFixed(2)}`).join("") + `H100`; const note = active !== null ? annotations[active] : null; function onKey(e: React.KeyboardEvent, i: number) { if (e.key !== "ArrowLeft" && e.key !== "ArrowRight") return; e.preventDefault(); const next = (i + (e.key === "ArrowRight" ? 1 : -1) + annotations.length) % annotations.length; btns.current[next]?.focus(); } return (

{title}

{subtitle}

{values[n - 1]} of {limit} {unit}

{ticks.map((t) => ( {t} ))}
setActive(null)}> {ticks.map((t) => ( ))} {note && } Plan limit · {limit} {annotations.map((a, i) => ( { btns.current[i] = el; }} type="button" aria-label={`${labels[a.index]}: ${a.title}. ${a.body}`} aria-describedby={active === i ? `${uid}-note` : undefined} initial={{ opacity: 0, scale: 0.4 }} animate={inView || reduce ? { opacity: 1, scale: active === i ? 1.15 : 1 } : undefined} transition={{ type: "spring", stiffness: 420, damping: 22, delay: reduce || active !== null ? 0 : 1 + i * 0.12 }} onPointerEnter={() => setActive(i)} onFocus={() => setActive(i)} onBlur={() => setActive(null)} onKeyDown={(e) => onKey(e, i)} className={cn( "absolute -ml-3 -mt-3 grid size-6 place-items-center rounded-full border-2 font-mono text-[11px] font-semibold outline-none focus-visible:shadow-[var(--focus-ring)]", active === i ? "border-volt-ink bg-volt text-on-volt" : "border-volt-ink bg-surface-raised text-ink", )} style={{ left: `${xp(a.index)}%`, top: `${yp(values[a.index] ?? 0)}%` }} > {i + 1} ))} {note && active !== null && ( 50 ? "-translate-x-[calc(100%+16px)]" : "translate-x-4")} style={{ left: `${xp(note.index)}%` }} >

{labels[note.index]} · {values[note.index]} {unit}

{note.title}

{note.body}

 )}
{labels.map((l, i) => ( {l} ))}
    {annotations.map((a, i) => (
  1. setActive(i)} onPointerLeave={() => setActive(null)} className={cn("flex items-start gap-2 rounded-sm px-2 py-1.5 transition-colors", active === i ? "bg-surface-hover" : "")}> {i + 1} {a.title} · {labels[a.index]}
    2. ))}
); } ```