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Charts

Free

Radar Chart with Filled Circle Grid

A radar on filled round rings: tinted circles with faint outlines behind a soft shape. A polished one-series profile for Vue dashboards.

Framework
Charting library

Preview

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About

Use it when the chart sits in a marketing page or a summary card and should feel finished rather than technical. The tinted rings frame the shape with barely any lines, which suits a single series; with two overlapping series, the fills start to muddy.

Four concentric circles are each filled with the series color at 20%, so the tint deepens toward the center, and their outlines and the spokes are faded to 20%. The shape on top is filled at 50% with no outline, and the month names sit around the edge.

Installation

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Usage

<script setup lang="ts">
import ChartRadarGridCircleFill from "@/components/charts/chart-radar-grid-circle-fill.vue";
</script>
<template>
  <ChartRadarGridCircleFill />
</template>

Customize

  • radialGrid({ fill: "var(--color-desktop)", fillOpacity: 0.2, shape: "circle", strokeOpacity: 0.2 }) draws tinted circles with faint outlines.
  • angleGrid keeps its labels and fades its spokes with strokeOpacity: 0.2.
  • The radialArea has fillOpacity: 0.5 and no stroke: no edge, only fill.
  • The data peaks at 285, so the radius scale stops at 300 here, not 320; the outer ring sits just past February.
  • Both the ring fill and the shape read var(--color-desktop), so one config change recolors the whole chart.

FAQ

How are the rings filled?

radialGrid takes fill and fillOpacity as well as a stroke. Here each circle is filled with the series color at 0.2, so the fills stack and the tint deepens toward the center, and its outline is faded to strokeOpacity: 0.2: the rings read as tinted bands more than lines.

Why are the spokes so faint?

angleGrid draws them at strokeOpacity: 0.2, like the rings' outlines, so the tint carries the grid. Raise it toward 1 to bring the lines forward, or set stroke: "none" to hide them and keep the month labels.

How do I keep the shape readable over the tint?

Each ring is filled at 0.2 and the shape at 0.5, with no outline. Keep the shape well above the grid, or the two blend. Give the radialArea a stroke in its own color and you can lower its fill further.

Does the tinted grid work in dark mode?

Yes. The ring fill is var(--color-desktop), which comes from chartConfig and follows --chart-1 into dark mode. For a different tint per mode, set theme: { light, dark } on the config entry.

Can the rings use a neutral color instead?

Fill the rings with any color you like: var(--muted) gives a neutral backdrop that doesn't depend on the series. Keep fillOpacity low, 0.1 to 0.25, so the shape stays on top visually.

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.

#default?slot

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

tooltip?(ChartTooltipContentOptions & { class?: string }) | false

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

Type
(ChartTooltipContentOptions & { class?: string }) | false
#tooltip?slot (ChartTooltipBodySlotContext)

A whole tooltip body of your own, in place of ChartTooltipContent: it gets the focused points (each with its datum, group and color). A scoped slot.

Type
slot (ChartTooltipBodySlotContext)
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.

EventType
@focus-change?(point: ChartPoint | null) => void

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

Type
(point: ChartPoint | null) => void
@focus-group-change?(points: readonly ChartPoint[]) => void

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

Type
(points: readonly ChartPoint[]) => void
@select?(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?slot ({ value, item, index })

A row's content in place of its indicator, name and value, as shadcn's formatter: a unit, a currency, a total row. A scoped slot; the row's series key is item.key.

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-vue-next 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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