Charts

Scatter Chart

Two-axis scatter. Default and Motion variants.

Examples

Default

Cronus reach versus conversion for two channels.

tsx

<ScatterChart series={[{ key: "Search", label: "Search", data: search }]} />

Motion

Offset rings, hover dim, clip-reveal enter. Two series from the chart ramp.

tsx

import { ScatterChart, Scatter, Grid, XAxis, ChartTooltip } from "@cronus-ui/ui/charts";

<ScatterChart data={data}>
  <Grid horizontal />
  <Scatter dataKey="sessions" />
  <Scatter dataKey="conversions" />
  <XAxis />
  <ChartTooltip />
</ScatterChart>

Installation

Default is a ready-made wrapper from the registry. Motion is the composable engine at @cronus-ui/ui/charts (peer visx + motion).

bash

npx cronus-ui add scatter-chart

tsx

import { ScatterChart } from "@cronus-ui/ui";

Usage

tsx

import { ScatterChart, Scatter, Grid, XAxis, YAxis, ChartTooltip } from "@cronus-ui/ui/charts";

<ScatterChart data={data}>
  <Grid horizontal vertical />
  <Scatter dataKey="alpha" />
  <Scatter dataKey="beta" />
  <XAxis />
  <YAxis />
  <ChartTooltip />
</ScatterChart>

Components

Motion API — compose these under the chart root. Default wrapper props are in Default API below.

ScatterChart

Root that sizes the SVG, provides scales, and hosts series children.

Prop	Type	Default	Description
`data`*	`Record<string, unknown>[]`	—	Rows with a date (or x) field and numeric series.
`xDataKey`	`string`	`"date"`	Key for the x-axis.
`margin`	`Partial<{ top, right, bottom, left }>`	`{ top: 40, right: 40, bottom: 40, left: 40 }`	Plot margins.
`animationDuration`	`number`	`1100`	Clip-reveal duration in ms.
`aspectRatio`	`string`	`"2 / 1"`	CSS aspect ratio.
`status`	`"loading" \| "ready"`	`"ready"`	Loading ↔ ready choreography.
`xDomain`	`[Date, Date]`	—	Visible x-range for brush zoom.
`className`	`string`	—	Container class.

Scatter

One series of points. Optional y-gradient, hover fade, ring style.

Prop	Type	Default	Description
`dataKey`*	`string`	—	Y-value key.
`fill`	`string`	—	Point fill. Defaults to --chart-1…5 by series order.
`radius`	`number`	`5`	Point radius.
`yGradient`	`boolean \| { from, to }`	—	Color by vertical position.
`fadeOnHover`	`boolean`	`true`	Dim inactive points.

Grid

Plot-area grid lines. Horizontal by default; optional shimmer while loading.

Prop	Type	Default	Description
`horizontal`	`boolean`	`true`	Show horizontal lines.
`vertical`	`boolean`	`false`	Show vertical lines.
`numTicksRows`	`number`	`5`	Horizontal line count.
`numTicksColumns`	`number`	`10`	Vertical line count.
`stroke`	`string`	`var(--chart-grid)`	Line color while ready.
`strokeDasharray`	`string`	`"4,4"`	Dash pattern.
`shimmer`	`boolean`	`false`	Animate a band across horizontal lines.
`highlightRowValues`	`number[]`	—	Rows drawn with alternate styling (e.g. zero).

XAxis

Time-axis labels that fade when the crosshair passes.

Prop	Type	Default	Description
`numTicks`	`number`	`5`	Tick labels to show, including first and last.
`tickerHalfWidth`	`number`	`50`	Fade radius around the date pill.
`tickMode`	`"data" \| "domain"`	`"data"`	`data` snaps labels to rows (crosshair-aligned). `domain` spaces ticks evenly.

YAxis

Value labels on the left or right. Pair `yAxisId` with series for dual axes.

Prop	Type	Default	Description
`yAxisId`	`string \| number`	`"left"`	Scale group id.
`orientation`	`"left" \| "right"`	`"left"`	Which side to render.
`numTicks`	`number`	`5`	Approximate tick count.
`formatLargeNumbers`	`boolean`	`true`	Format 1000 as "1k".
`formatValue`	`(value: number) => string`	—	Custom tick formatter. Overrides formatLargeNumbers.

ChartTooltip

Motion tooltip: crosshair, series dots, floating panel, optional date pill. This is not the recharts ChartTooltip from `@cronus-ui/ui`.

Prop	Type	Default	Description
`showDatePill`	`boolean`	`true`	Animated date ticker on the x-axis.
`showCrosshair`	`boolean`	`true`	Vertical crosshair.
`showDots`	`boolean`	`true`	Dots on series at the hovered x.
`dotVariant`	`"dot" \| "ring"`	`"dot"`	Filled circle or ring.
`indicatorColor`	`string \| (point) => string`	—	Crosshair and dot color.
`indicatorDasharray`	`string`	—	Dash pattern for the crosshair.
`indicatorFadeEdges`	`"both" \| "top" \| "bottom" \| "none"`	`"both"`	Vertical crosshair fade.
`matchCrosshair`	`boolean`	`false`	Panel uses the crosshair spring when true.
`damping`	`number`	`20`	Panel follow when matchCrosshair is false. 0 = instant.
`content`	`(props) => ReactNode`	—	Custom tooltip renderer.
`rows`	`(point) => TooltipRow[]`	—	Custom row generator.

Y gradient

yGradient colors each dot by its vertical position. Default stops are danger (low) → success (high).

tsx

<Scatter dataKey="score" yGradient />
<Scatter dataKey="score" yGradient={{ from: "var(--cronus-danger)", to: "var(--cronus-success)" }} />

Data format

const data = [
  { date: new Date("2025-01-01"), alpha: 12, beta: 18 },
  { date: new Date("2025-02-01"), alpha: 19, beta: 14 },
];

Theming

Motion charts read `--chart-*` aliases that map onto Cronus semantic tokens (`--cronus-chart-1`…`--cronus-chart-5`, `--cronus-border`, `--cronus-fg`, surfaces). Override the aliases or the tokens — never palette scales (`bg-zinc-900`). Default wrappers use `ChartConfig` with `var(--cronus-chart-*)` / `var(--cronus-primary)`.

Full token reference: Theming.

Dependencies

Default needs the recharts peer. Motion needs visx (and sometimes d3) as optional peers — install only what this chart uses.

bash

bun add recharts

bash

bun add @visx/curve @visx/responsive @visx/scale @visx/shape motion react-use-measure

Default API

Generated from the Default wrapper's exported types. Motion subcomponents are documented above.

ScatterChartProps

Extends HTMLAttributes<HTMLDivElement>

Prop	Type	Default	Description
`xKey`	`string`	`"x"`	—
`yKey`	`string`	`"y"`	—
`series`*	`ScatterChartSeries[]`	—	—