# Radar Chart Legend

Two overlapping radar shapes with a legend beneath that names each series.

Radar Chart Legend is an open-source chart from suiss/ui for React, React Native, SwiftUI and Jetpack Compose. The @esuiss/ui CLI copies its source into your project, so you own the code.

Source: https://ui.suiss.app/docs/charts/radar-chart-legend

**React**

**Example**

```tsx title="components/charts/radar-chart-legend.tsx"
"use client"

import { PolarAngleAxis, PolarGrid, Radar, RadarChart } from "recharts"

import {
  Card,
  CardContent,
  CardDescription,
  CardHeader,
  CardTitle,
} from "@/components/ui/card"
import {
  type ChartConfig,
  ChartContainer,
  ChartLegend,
  ChartLegendContent,
  ChartTooltip,
  ChartTooltipContent,
} from "@/components/ui/chart"

const chartData = [
  { skill: "Cardio", thisMonth: 86, lastMonth: 72 },
  { skill: "Strength", thisMonth: 62, lastMonth: 58 },
  { skill: "Flexibility", thisMonth: 48, lastMonth: 55 },
  { skill: "Balance", thisMonth: 70, lastMonth: 60 },
  { skill: "Endurance", thisMonth: 80, lastMonth: 66 },
  { skill: "Speed", thisMonth: 74, lastMonth: 70 },
]

const chartConfig = {
  thisMonth: { label: "This month", color: "var(--color-green-500)" },
  lastMonth: { label: "Last month", color: "var(--chart-5)" },
} satisfies ChartConfig

export function RadarChartLegend() {
  return (
    <Card variant="filled" size="sm">
      <CardHeader>
        <CardTitle>With a legend</CardTitle>
        <CardDescription>Series listed below</CardDescription>
      </CardHeader>
      <CardContent>
        <ChartContainer
          config={chartConfig}
          className="aspect-auto h-60 w-full"
        >
          <RadarChart
            accessibilityLayer
            data={chartData}
            cy="45%"
            outerRadius="62%"
          >
            <ChartTooltip
              cursor={false}
              content={<ChartTooltipContent indicator="line" />}
            />
            <ChartLegend
              verticalAlign="bottom"
              content={<ChartLegendContent />}
            />
            <PolarGrid stroke="var(--border)" />
            <PolarAngleAxis dataKey="skill" />
            <Radar
              dataKey="lastMonth"
              stroke="var(--color-lastMonth)"
              fill="var(--color-lastMonth)"
              fillOpacity={0.2}
              strokeWidth={2}
            />
            <Radar
              dataKey="thisMonth"
              stroke="var(--color-thisMonth)"
              fill="var(--color-thisMonth)"
              fillOpacity={0.2}
              strokeWidth={2}
            />
          </RadarChart>
        </ChartContainer>
      </CardContent>
    </Card>
  )
}
```

Two overlapping radar shapes with a legend underneath naming each series. Pick it over the plain multiple-series chart when readers need to know which shape is which without hovering.

## Installation

### CLI

```bash title="Terminal"
npx shadcn@latest add @esuiss/radar-chart-legend
```

Works in any project with a `components.json`. See [Installation](https://ui.suiss.app/docs/installation#add-components) for the one-line registry setup. Or use the suiss/ui CLI:

```bash title="Terminal"
npx @esuiss/ui@latest add charts radar-chart-legend
```

### Manual

1. Install the dependencies:

```bash title="Terminal"
npm install recharts
```

2. Add the pieces it builds on: [Card](https://ui.suiss.app/docs/components/card), [Chart](https://ui.suiss.app/docs/components/chart).

3. Copy the source into `components/charts/radar-chart-legend.tsx`:

```tsx title="components/charts/radar-chart-legend.tsx"
"use client"

import { PolarAngleAxis, PolarGrid, Radar, RadarChart } from "recharts"

import {
  Card,
  CardContent,
  CardDescription,
  CardHeader,
  CardTitle,
} from "@/components/ui/card"
import {
  type ChartConfig,
  ChartContainer,
  ChartLegend,
  ChartLegendContent,
  ChartTooltip,
  ChartTooltipContent,
} from "@/components/ui/chart"

const chartData = [
  { skill: "Cardio", thisMonth: 86, lastMonth: 72 },
  { skill: "Strength", thisMonth: 62, lastMonth: 58 },
  { skill: "Flexibility", thisMonth: 48, lastMonth: 55 },
  { skill: "Balance", thisMonth: 70, lastMonth: 60 },
  { skill: "Endurance", thisMonth: 80, lastMonth: 66 },
  { skill: "Speed", thisMonth: 74, lastMonth: 70 },
]

const chartConfig = {
  thisMonth: { label: "This month", color: "var(--color-green-500)" },
  lastMonth: { label: "Last month", color: "var(--chart-5)" },
} satisfies ChartConfig

export function RadarChartLegend() {
  return (
    <Card variant="filled" size="sm">
      <CardHeader>
        <CardTitle>With a legend</CardTitle>
        <CardDescription>Series listed below</CardDescription>
      </CardHeader>
      <CardContent>
        <ChartContainer
          config={chartConfig}
          className="aspect-auto h-60 w-full"
        >
          <RadarChart
            accessibilityLayer
            data={chartData}
            cy="45%"
            outerRadius="62%"
          >
            <ChartTooltip
              cursor={false}
              content={<ChartTooltipContent indicator="line" />}
            />
            <ChartLegend
              verticalAlign="bottom"
              content={<ChartLegendContent />}
            />
            <PolarGrid stroke="var(--border)" />
            <PolarAngleAxis dataKey="skill" />
            <Radar
              dataKey="lastMonth"
              stroke="var(--color-lastMonth)"
              fill="var(--color-lastMonth)"
              fillOpacity={0.2}
              strokeWidth={2}
            />
            <Radar
              dataKey="thisMonth"
              stroke="var(--color-thisMonth)"
              fill="var(--color-thisMonth)"
              fillOpacity={0.2}
              strokeWidth={2}
            />
          </RadarChart>
        </ChartContainer>
      </CardContent>
    </Card>
  )
}
```

4. Update the import paths to match your project.

## Usage

```tsx
import { RadarChartLegend } from "@/components/charts/radar-chart-legend"
```

```tsx
<RadarChartLegend />
```

Replace `chartData` and rename the series keys in the data, both `Radar` elements and `chartConfig`; the legend reads labels and colors from the config. The series declared last is drawn on top.

**React Native, SwiftUI, Jetpack Compose**

![Preview](https://ui.suiss.app/previews/charts-radar--legend.light.webp)

```tsx title="uniwind/components/charts/radar-chart-legend.tsx"
import {
  Card,
  CardContent,
  CardDescription,
  CardHeader,
  CardTitle,
} from "@/components/ui/card"
import {
  type ChartConfig,
  ChartContainer,
  ChartLegend,
  ChartLegendContent,
  ChartTooltip,
  ChartTooltipContent,
  PolarAngleAxis,
  PolarGrid,
  Radar,
  RadarChart,
} from "@/components/ui/chart"

const chartData = [
  { skill: "Cardio", thisMonth: 86, lastMonth: 72 },
  { skill: "Strength", thisMonth: 62, lastMonth: 58 },
  { skill: "Flexibility", thisMonth: 48, lastMonth: 55 },
  { skill: "Balance", thisMonth: 70, lastMonth: 60 },
  { skill: "Endurance", thisMonth: 80, lastMonth: 66 },
  { skill: "Speed", thisMonth: 74, lastMonth: 70 },
]

const chartConfig = {
  thisMonth: { label: "This month", color: "green-500" },
  lastMonth: { label: "Last month", color: "chart-5" },
} satisfies ChartConfig

export function RadarChartLegend() {
  return (
    <Card variant="filled" size="sm">
      <CardHeader>
        <CardTitle>With a legend</CardTitle>
        <CardDescription>Series listed below</CardDescription>
      </CardHeader>
      <CardContent>
        <ChartContainer
          config={chartConfig}
          accessibilityLabel="With a legend"
          className="h-60 w-full"
        >
          <RadarChart data={chartData} cy="45%" outerRadius="62%">
            <ChartTooltip content={<ChartTooltipContent indicator="line" />} />
            <ChartLegend content={<ChartLegendContent />} />
            <PolarGrid />
            <PolarAngleAxis dataKey="skill" />
            <Radar dataKey="lastMonth" fillOpacity={0.2} strokeWidth={2} />
            <Radar dataKey="thisMonth" fillOpacity={0.2} strokeWidth={2} />
          </RadarChart>
        </ChartContainer>
      </CardContent>
    </Card>
  )
}
```

```swift title="swift/Charts/RadarChartLegend.swift"
import SwiftUI

private let chartData: [(skill: String, thisMonth: Double, lastMonth: Double)] = [
  ("Cardio", 86, 72),
  ("Strength", 62, 58),
  ("Flexibility", 48, 55),
  ("Balance", 70, 60),
  ("Endurance", 80, 66),
  ("Speed", 74, 70),
]

private let chartConfig: ChartConfig = [
  "thisMonth": .init("This month", color: Palette.green500),
  "lastMonth": .init("Last month", color: EsuissColor.chart5),
]

public struct RadarChartLegend: View {
  @State private var selection: Int?

  public init() {}

  public var body: some View {
    Card(.filled, size: .sm) {
      CardHeader("With a legend", description: "Series listed below")
      CardContent {
        ChartContainer(config: chartConfig) {
          RadarChart(
            [
              Radar("lastMonth", values: chartData.map(\.lastMonth), fillOpacity: 0.2, strokeWidth: 2),
              Radar("thisMonth", values: chartData.map(\.thisMonth), fillOpacity: 0.2, strokeWidth: 2),
            ],
            labels: chartData.map(\.skill),
            outerRadius: 0.62,
            center: UnitPoint(x: 0.5, y: 0.45),
            selection: $selection,
            accessibilityLabel: "With a legend"
          ) { payload in
            ChartTooltipContent(payload, indicator: .line)
          }
          ChartLegendContent()
        }
        .frame(height: 240)
      }
    }
  }
}
```

```kt title="kotlin/charts/RadarChartLegend.kt"
package com.esuiss.ui.charts

import androidx.compose.foundation.layout.fillMaxWidth
import androidx.compose.foundation.layout.height
import androidx.compose.runtime.Composable
import androidx.compose.ui.Modifier
import androidx.compose.ui.unit.dp
import com.esuiss.ui.components.Card
import com.esuiss.ui.components.CardContent
import com.esuiss.ui.components.CardHeader
import com.esuiss.ui.components.CardSize
import com.esuiss.ui.components.CardVariant
import com.esuiss.ui.components.ChartConfig
import com.esuiss.ui.components.ChartConfigItem
import com.esuiss.ui.components.ChartContainer
import com.esuiss.ui.components.ChartTooltipContent
import com.esuiss.ui.components.ChartTooltipIndicator
import com.esuiss.ui.components.RadarChart
import com.esuiss.ui.theme.EsuissTheme
import com.esuiss.ui.theme.Palette

private class RadarLegendRow(val skill: String, val thisMonth: Double, val lastMonth: Double)

private val chartData = listOf(
    RadarLegendRow("Cardio", 86.0, 72.0),
    RadarLegendRow("Strength", 62.0, 58.0),
    RadarLegendRow("Flexibility", 48.0, 55.0),
    RadarLegendRow("Balance", 70.0, 60.0),
    RadarLegendRow("Endurance", 80.0, 66.0),
    RadarLegendRow("Speed", 74.0, 70.0),
)

private val chartConfig = ChartConfig(
    "thisMonth" to ChartConfigItem("This month") { Palette.green500 },
    "lastMonth" to ChartConfigItem("Last month") { chart5 },
)

@Composable
fun RadarChartLegend(modifier: Modifier = Modifier) {
    val colors = EsuissTheme.colors
    Card(modifier, variant = CardVariant.Filled, size = CardSize.Sm) {
        CardHeader("With a legend", description = "Series listed below")
        CardContent {
            ChartContainer(
                chartConfig,
                Modifier
                    .fillMaxWidth()
                    .height(240.dp),
            ) {
                RadarChart(chartData, cy = 0.45f, outerRadius = 0.62f, accessibilityLabel = "With a legend") {
                    ChartTooltip { ChartTooltipContent(indicator = ChartTooltipIndicator.Line) }
                    ChartLegend()
                    PolarGrid(stroke = colors.border)
                    PolarAngleAxis(label = { it.skill })
                    Radar(
                        "lastMonth",
                        value = { it.lastMonth },
                        fillOpacity = 0.2f,
                        strokeWidth = 2.dp,
                    )
                    Radar(
                        "thisMonth",
                        value = { it.thisMonth },
                        fillOpacity = 0.2f,
                        strokeWidth = 2.dp,
                    )
                }
            }
        }
    }
}
```

A `RadarChart` with two filled `Radar` series and a `ChartLegend` that names them from `chartConfig`. `chartData` has one record per axis (`skill`) with `thisMonth` and `lastMonth` scores. Pressing the chart shows a tooltip with both values.

## Installation

**React Native**

```bash title="Terminal"
npx shadcn@latest add @esuiss-rn/radar-chart-legend
```

See [Installation](https://ui.suiss.app/docs/installation) for the `components.json` setup. Or use the suiss/ui CLI:

```bash title="Terminal"
npx @esuiss/ui@latest add radar-chart-legend
```

**SwiftUI**

```bash title="Terminal"
npx @esuiss/ui@latest add radar-chart-legend --platform swift
```

**Jetpack Compose**

```bash title="Terminal"
npx @esuiss/ui@latest add radar-chart-legend --platform kotlin
```

The CLI also adds what it builds on: [Card](https://ui.suiss.app/docs/components/card), [Chart](https://ui.suiss.app/docs/components/chart).

### Manual

**React Native**

**Uniwind**

1. Add the pieces it builds on: [Card](https://ui.suiss.app/docs/components/card), [Chart](https://ui.suiss.app/docs/components/chart).

2. Copy the source into `components/charts/radar-chart-legend.tsx`:

- `uniwind/components/charts/radar-chart-legend.tsx`: shown above

3. Update the import paths to match your project.

**NativeWind**

1. Add the pieces it builds on: [Card](https://ui.suiss.app/docs/components/card), [Chart](https://ui.suiss.app/docs/components/chart).

2. Copy the source into `components/charts/radar-chart-legend.tsx`:

```tsx title="nativewind/components/charts/radar-chart-legend.tsx"
import {
  Card,
  CardContent,
  CardDescription,
  CardHeader,
  CardTitle,
} from "@/components/ui/card"
import {
  type ChartConfig,
  ChartContainer,
  ChartLegend,
  ChartLegendContent,
  ChartTooltip,
  ChartTooltipContent,
  PolarAngleAxis,
  PolarGrid,
  Radar,
  RadarChart,
} from "@/components/ui/chart"

const chartData = [
  { skill: "Cardio", thisMonth: 86, lastMonth: 72 },
  { skill: "Strength", thisMonth: 62, lastMonth: 58 },
  { skill: "Flexibility", thisMonth: 48, lastMonth: 55 },
  { skill: "Balance", thisMonth: 70, lastMonth: 60 },
  { skill: "Endurance", thisMonth: 80, lastMonth: 66 },
  { skill: "Speed", thisMonth: 74, lastMonth: 70 },
]

const chartConfig = {
  thisMonth: { label: "This month", color: "green-500" },
  lastMonth: { label: "Last month", color: "chart-5" },
} satisfies ChartConfig

export function RadarChartLegend() {
  return (
    <Card variant="filled" size="sm">
      <CardHeader>
        <CardTitle>With a legend</CardTitle>
        <CardDescription>Series listed below</CardDescription>
      </CardHeader>
      <CardContent>
        <ChartContainer
          config={chartConfig}
          accessibilityLabel="With a legend"
          className="h-60 w-full"
        >
          <RadarChart data={chartData} cy="45%" outerRadius="62%">
            <ChartTooltip content={<ChartTooltipContent indicator="line" />} />
            <ChartLegend content={<ChartLegendContent />} />
            <PolarGrid />
            <PolarAngleAxis dataKey="skill" />
            <Radar dataKey="lastMonth" fillOpacity={0.2} strokeWidth={2} />
            <Radar dataKey="thisMonth" fillOpacity={0.2} strokeWidth={2} />
          </RadarChart>
        </ChartContainer>
      </CardContent>
    </Card>
  )
}
```

3. Update the import paths to match your project.

**StyleSheet**

1. Add the pieces it builds on: [Card](https://ui.suiss.app/docs/components/card), [Chart](https://ui.suiss.app/docs/components/chart).

2. Copy the source into `components/charts/radar-chart-legend.tsx`:

```tsx title="stylesheet/components/charts/radar-chart-legend.tsx"
import {
  Card,
  CardContent,
  CardDescription,
  CardHeader,
  CardTitle,
} from "@/components/ui/card"
import {
  type ChartConfig,
  ChartContainer,
  ChartLegend,
  ChartLegendContent,
  ChartTooltip,
  ChartTooltipContent,
  PolarAngleAxis,
  PolarGrid,
  Radar,
  RadarChart,
} from "@/components/ui/chart"

const chartData = [
  { skill: "Cardio", thisMonth: 86, lastMonth: 72 },
  { skill: "Strength", thisMonth: 62, lastMonth: 58 },
  { skill: "Flexibility", thisMonth: 48, lastMonth: 55 },
  { skill: "Balance", thisMonth: 70, lastMonth: 60 },
  { skill: "Endurance", thisMonth: 80, lastMonth: 66 },
  { skill: "Speed", thisMonth: 74, lastMonth: 70 },
]

const chartConfig = {
  thisMonth: { label: "This month", color: "green-500" },
  lastMonth: { label: "Last month", color: "chart-5" },
} satisfies ChartConfig

export function RadarChartLegend() {
  return (
    <Card variant="filled" size="sm">
      <CardHeader>
        <CardTitle>With a legend</CardTitle>
        <CardDescription>Series listed below</CardDescription>
      </CardHeader>
      <CardContent>
        <ChartContainer
          config={chartConfig}
          accessibilityLabel="With a legend"
          style={{ height: 240 }}
        >
          <RadarChart data={chartData} cy="45%" outerRadius="62%">
            <ChartTooltip content={<ChartTooltipContent indicator="line" />} />
            <ChartLegend content={<ChartLegendContent />} />
            <PolarGrid />
            <PolarAngleAxis dataKey="skill" />
            <Radar dataKey="lastMonth" fillOpacity={0.2} strokeWidth={2} />
            <Radar dataKey="thisMonth" fillOpacity={0.2} strokeWidth={2} />
          </RadarChart>
        </ChartContainer>
      </CardContent>
    </Card>
  )
}
```

3. Update the import paths to match your project.

**SwiftUI**

1. Target iOS 17 or later.

2. Copy the theme files every view uses:

- `swift/Theme/Theme.swift`: [source](https://github.com/e-suiss/ui/blob/main/packages/mobile/swiftui/Sources/EsuissUI/Theme/Theme.swift)

- `swift/Theme/Tokens.swift`: [source](https://github.com/e-suiss/ui/blob/main/packages/mobile/swiftui/Sources/EsuissUI/Theme/Tokens.swift)

3. Copy the source and every file it uses:

- `swift/Charts/RadarChartLegend.swift`: shown above

- `swift/Components/Card.swift`: see [Card](https://ui.suiss.app/docs/components/card.md)

- `swift/Components/Chart.swift`: see [Chart](https://ui.suiss.app/docs/components/chart.md)

- `swift/Components/Haptics.swift`: see [Haptics](https://ui.suiss.app/docs/components/haptics.md)

- `swift/Components/Item.swift`: see [Item](https://ui.suiss.app/docs/components/item.md)

- `swift/Components/Separator.swift`: see [Separator](https://ui.suiss.app/docs/components/separator.md)

- `swift/Components/TextVariant.swift`: [source](https://github.com/e-suiss/ui/blob/main/packages/mobile/swiftui/Sources/EsuissUI/Components/TextVariant.swift)

4. Add the files to your app target.

**Jetpack Compose**

1. Set `minSdk` to 24 or higher and add the dependencies:

```kotlin title="build.gradle.kts"
implementation(platform("androidx.compose:compose-bom:2026.09.00"))
implementation("androidx.compose.foundation:foundation")
implementation("androidx.compose.ui:ui")
```

2. Copy the theme files every view uses:

- `kotlin/theme/Theme.kt`: [source](https://github.com/e-suiss/ui/blob/main/packages/mobile/kotlin/ui/src/main/kotlin/com/esuiss/ui/theme/Theme.kt)

- `kotlin/theme/Tokens.kt`: [source](https://github.com/e-suiss/ui/blob/main/packages/mobile/kotlin/ui/src/main/kotlin/com/esuiss/ui/theme/Tokens.kt)

3. Copy the source and every file it uses:

- `kotlin/charts/RadarChartLegend.kt`: shown above

- `kotlin/components/Card.kt`: see [Card](https://ui.suiss.app/docs/components/card.md)

- `kotlin/components/Chart.kt`: see [Chart](https://ui.suiss.app/docs/components/chart.md)

- `kotlin/components/Content.kt`: [source](https://github.com/e-suiss/ui/blob/main/packages/mobile/kotlin/ui/src/main/kotlin/com/esuiss/ui/components/Content.kt)

- `kotlin/components/FormSupport.kt`: [source](https://github.com/e-suiss/ui/blob/main/packages/mobile/kotlin/ui/src/main/kotlin/com/esuiss/ui/components/FormSupport.kt)

- `kotlin/components/Haptics.kt`: see [Haptics](https://ui.suiss.app/docs/components/haptics.md)

- `kotlin/components/Icon.kt`: see [Icon](https://ui.suiss.app/docs/components/icon.md)

4. Update the `com.esuiss.ui` package names to match your project.

## Usage

```tsx
import { RadarChartLegend } from "@/components/charts/radar-chart-legend"
```

```tsx
<RadarChartLegend />
```

Replace `chartData` with your records, set `PolarAngleAxis` `dataKey` to your axis field, and rename the series in `chartConfig`. The component takes no props.