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Charts

Free

Radar Chart with Radius Axis

A two-series radar with its radius values printed along one spoke, 0 to 320, so the rings read as numbers. Built in Solid with TanStack Charts.

Framework
Charting library

Preview

Preview width

About

Most radars hide their scale. This one prints it: the ring values run up one spoke, so people can tell that a corner sits near 240 without hovering. Use it for analytical views or when several radars need to share a visible scale.

Desktop and Mobile overlap on four polygon rings at 80, 160, 240 and 320, the numbers set along a tilted spoke in the foreground color. There are no month names at the edge; the tooltip gives the values per month.

Installation

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Usage

import { ChartRadarRadius } from "@/components/charts/chart-radar-radius";
<ChartRadarRadius />

Customize

  • radialGrid({ labels: true, shape: "polygon" }) draws a ring on each of the radius scale's ticks and prints its value.
  • labelAngle: Math.PI / 6 and labelRotate: 30 place and turn the labels; labelFill: "var(--foreground)" colors them.
  • angleGrid({ labels: false }) draws the spokes without the month names: the radius labels are the only text.
  • chartLinearScale rounds the top value, 305, up to 320 and ticks every 80, so the printed values sit on the rings.

FAQ

How are the radius values drawn?

radialGrid takes labels: true, which prints each ring's value. labelAngle: Math.PI / 6 puts them on a line 30 degrees clockwise from the top, between January and February, and labelRotate: 30 turns the text with it.

How do I move the values to another spoke?

Change labelAngle, in radians from twelve o'clock going clockwise: 0 puts the scale straight up, Math.PI straight down.

How do I change the numbers on the axis?

The rings and their labels both come from the radius scale's ticks: 0 to 320 in steps of 80 here. Pass the guide values for others, or format to print them as 1.2k or a percent.

Where are the month names?

This version labels the radius instead: its angleGrid draws the spokes with labels: false. Remove that option and the month names come back around the edge.

When does a radius axis help?

Use the axis when people need to read approximate values off the rings, or when two radars sit side by side and must share a scale. For a quick sense of shape, the plain radar is calmer.

API Reference

ChartContainer

<div> data-slot="chart"

PropType
configChartConfig

Each series' label, icon and color, read by the tooltip and the legend.

definitionChartDefinition

The chart: defineChart(spec, chartTooltip()), its data, marks, scales and axes, and the tooltip's focus.

ariaLabelstring

The chart's accessible name: the card's title.

ariaDescription?string

The chart's accessible description.

class?string

The container's size: aspect-auto h-[250px] w-full, mx-auto aspect-square max-h-[250px]. It's aspect-video by default.

children?JSX.Element

What sits under the chart inside the container: a ChartLegend.

tooltip?ChartTooltipContentProps | false

ChartTooltipContent's props (indicator, hideLabel, formatter…) for the default body, or false for TanStack's own tooltip body.

Type
ChartTooltipContentProps | false
renderTooltip?(context: ChartTooltipBodyRenderContext) => JSX.Element

A whole tooltip body of your own, in place of ChartTooltipContent: it gets the focused points (each with its datum, group and color). Read the context's fields in JSX (context.points), so Solid tracks them.

Type
(context: ChartTooltipBodyRenderContext) => JSX.Element
defaultIndex?number

The category whose tooltip shows before any pointer, as Recharts' defaultIndex.

height?number

A fixed height in pixels for the chart, in place of the container's.

aspectRatio?number

A width-to-height ratio for the chart, in place of the container's height.

initialWidth?number

The width the chart renders at before it's measured.

onFocusChange?(point: ChartPoint | null) => void

Called as the focused point changes: a pointer, a key or a tap.

Type
(point: ChartPoint | null) => void
onFocusGroupChange?(points: readonly ChartPoint[]) => void

Called with every point at the focused category (a stacked or grouped chart's).

Type
(points: readonly ChartPoint[]) => void
onSelect?(point: ChartPoint | null) => void

Called when a point is clicked or picked with Enter.

Type
(point: ChartPoint | null) => void
CSS variableType
--color-<key>?color

Each config key's color (its theme color in light and dark), set on the container: the marks paint with var(--color-<key>).

ChartTooltipContent

<div>

PropType
pointsreadonly ChartPoint[]

The focused points, from the tooltip's context. ChartContainer passes them to its default body; a body of your own passes its context's.

indicator?"dot" | "line" | "dashed"

The indicator's shape beside each row.

Type
"dot" | "line" | "dashed"
Default
"dot"
hideLabel?boolean

Hides the label above the rows (the focused category).

Default
false
hideIndicator?boolean

Hides each row's color indicator.

Default
false
label?string

The label's text in place of the focused category, looked up in config.

labelKey?string

The datum field (or config key) the label is read from, looked up in config.

nameKey?string

The datum field (or config key) each row's series is read from: a pie's browser.

valueKey?string

The datum field each row's value is read from, for points that carry geometry rather than values (a pie's, from pie()).

color?string

One indicator color for every row, in place of each series' own.

labelFormatter?(label: string, points: readonly ChartPoint[]) => string

Formats the label (the config's label or the category), with the rows' points: a date written out, a unit.

Type
(label: string, points: readonly ChartPoint[]) => string
formatter?(value: number | string, name: string, item: ChartTooltipItem, index: number) => JSX.Element

A row's content in place of its indicator, name and value, as shadcn's formatter: a unit, a currency, a total row.

Type
(value: number | string, name: string, item: ChartTooltipItem, index: number) => JSX.Element
class?string

Classes for the tooltip's card.

ChartLegend

<div>

PropType
config?ChartConfig

The series to list: the container's config by default.

keys?readonly string[]

The series keys to list, in order: every key with a color by default.

hideIcon?boolean

Hides each series' icon (from config), leaving its color swatch.

Default
false
verticalAlign?"top" | "bottom"

Above the chart or under it.

Type
"top" | "bottom"
Default
"bottom"
class?string

Classes for the legend's row.

ChartConfig

KeyType
label?string

The series' name in the tooltip and the legend.

icon?Component

An icon beside its name in the legend and the tooltip (a lucide-solid icon).

color?string

Its color in both themes: a token (var(--chart-1)) or any CSS color.

theme?{ light: string; dark: string }

A color for each theme, in place of color.

Helpers

ExportType
chartTooltip?(settings?: ChartTooltipSettings) => ChartDefinitionOptions

defineChart's second argument for a chart with a tooltip: what a pointer or a key focuses (group-x, each category's series, by default), the focus ring, and the host ChartContainer draws its body in.

Type
(settings?: ChartTooltipSettings) => ChartDefinitionOptions
chartTheme?ChartTheme

defineChart's theme in the site's tokens: the text, the grid and the palette (--chart-1 to --chart-5).

chartColors?(config: ChartConfig, keys?: readonly string[]) => { domain: string[]; range: string[] }

defineChart's color: each series key (in config order, or keys') painted var(--color-<key>), for marks with a color channel.

Type
(config: ChartConfig, keys?: readonly string[]) => { domain: string[]; range: string[] }
chartLinearScale?() => LinearScale

A value axis drawn as Recharts draws its default one: zero in the domain, five nice ticks. Pass it as a factory: y: { scale: chartLinearScale }.

Type
() => LinearScale
curveNatural?CurveFactory

D3's natural curve, for a smooth line or area: curve: d3Curve(curveNatural).

curveStep?CurveFactory

D3's step curve, for a line or area that holds each value: curve: d3Curve(curveStep).

curveMonotoneX?CurveFactory

D3's monotone curve, smooth without overshooting a point: curve: d3Curve(curveMonotoneX).

curveLinearClosed?CurveFactory

D3's closed linear curve: a radar's polygon (curve: curveLinearClosed on radialLine and radialArea).

useChart?() => { config: ChartConfig }

The config of the ChartContainer around a component of your own (a custom tooltip body or legend).

Type
() => { config: ChartConfig }
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