# Radar Chart Lines Only

> A radar chart rendering stroke outlines without area fills built with TanStack Charts.

A shadcn/ui block from the [@paceui](https://paceui.com/?utm_source=shadcn.exchange) registry, listed on [shadcn.exchange](https://shadcn.exchange/r/paceui/tanstack-charts-radar-lines-only).

- Page, with a live preview: https://shadcn.exchange/r/paceui/tanstack-charts-radar-lines-only
- Screenshot: https://abzjhwgwpdpz7ua5.public.blob.vercel-storage.com/shots/paceui/tanstack-charts-radar-lines-only-light-79c147d15692103e.png
- Registry item: https://paceui.com/r/tanstack-charts-radar-lines-only.json
- Listed: 2026-10-21, source last changed 2026-10-21

## Install

```bash
npx shadcn@latest add https://shadcn.exchange/r/paceui/tanstack-charts-radar-lines-only.json
```

Run it in a project that has shadcn/ui set up. It adds the files below and installs what they depend on.

## Dependencies

- npm packages: `@tanstack/charts`, `@tanstack/react-charts`, `d3-scale`, `d3-shape`
- Registry items: `card`

## Files

### `components/tanstack-charts/radar/radar-lines-only.tsx`

```tsx
import { type ChartPoint, defineChart } from "@tanstack/charts";
import { motion } from "@tanstack/charts/motion";
import { angleGrid, focusGroupAngle, polar, radialArea, radialGrid } from "@tanstack/charts/polar";
import { tooltip } from "@tanstack/charts/tooltip";
import { Chart } from "@tanstack/react-charts/core";
import { useMemo } from "react";

import { scaleLinear, scalePoint } from "d3-scale";
import { curveLinearClosed } from "d3-shape";
import { TrendingUp } from "lucide-react";

import { Card, CardContent, CardDescription, CardFooter, CardHeader, CardTitle } from "@/components/ui/card";

function generateDemoData() {
    return [
        { month: "January", desktop: 186, mobile: 160 },
        { month: "February", desktop: 185, mobile: 170 },
        { month: "March", desktop: 207, mobile: 130 },
        { month: "April", desktop: 173, mobile: 160 },
        { month: "May", desktop: 160, mobile: 190 },
        { month: "June", desktop: 174, mobile: 204 },
    ];
}

const twoSeries = ["desktop", "mobile"] as const;
const chartColors = ["var(--chart-1)", "var(--chart-2)"];

const motionRenderer = motion({
    initial: "always",
    transition: { type: "spring", stiffness: 170, damping: 18, mass: 1 },
});

function titleCase(value: string) {
    return value.charAt(0).toUpperCase() + value.slice(1);
}

function shadcnTooltipContent<TDatum>(points: readonly ChartPoint<TDatum>[]) {
    return {
        title: String(points[0]?.xValue ?? ""),
        rows: points.map((point) => ({
            label: titleCase(
                String(point.group ?? point.markId.replace(/-?(bars|lines|areas|slices|values|radar)$/u, "")),
            ),
            value: Number(point.yValue ?? point.xValue ?? 0).toLocaleString("en-US"),
            color: point.color,
        })),
    };
}

export function RadarLinesOnly() {
    const data = useMemo(() => generateDemoData(), []);

    const definition = useMemo(() => {
        const months = data.map((row) => row.month);
        const radiusMax = 220;
        const gridValues = Array.from({ length: 4 }, (_, index) => Math.round((radiusMax * (index + 1)) / 4));

        const guides = [
            radialGrid({
                values: gridValues,
                shape: "polygon",
                stroke: "var(--border)",
                strokeOpacity: 1,
            }),
            angleGrid({
                values: months,
                labels: true,
                labelOffset: 10,
                labelFill: "var(--muted-foreground)",
                labelFontSize: 12,
                stroke: "transparent",
                strokeOpacity: 1,
            }),
        ];

        return defineChart(
            {
                renderer: motionRenderer,
                motion: {
                    transition: { type: "spring", stiffness: 170, damping: 18, mass: 1 },
                },
                scales: {
                    x: null,
                    y: null,
                },
                marks: [
                    polar({
                        radiusRatio: 0.76,
                        scales: {
                            angle: { scale: scalePoint<string>().domain(months), wrap: true },
                            radius: { scale: scaleLinear().domain([0, radiusMax]) },
                        },
                        guides,
                        marks: [
                            radialArea(data, {
                                id: "desktop-radar",
                                className: "ts-chart__radar",
                                angle: "month",
                                radius: "desktop",
                                key: "month",
                                z: () => "desktop",
                                curve: curveLinearClosed,
                                fill: chartColors[0],
                                fillOpacity: 0,
                                stroke: chartColors[0],
                                strokeOpacity: 1,
                                strokeWidth: 2,
                            }),
                            radialArea(data, {
                                id: "mobile-radar",
                                className: "ts-chart__radar",
                                angle: "month",
                                radius: "mobile",
                                key: "month",
                                z: () => "mobile",
                                curve: curveLinearClosed,
                                fill: chartColors[1],
                                fillOpacity: 0,
                                stroke: chartColors[1],
                                strokeWidth: 2,
                            }),
                        ],
                    }),
                ],
                color: { domain: twoSeries, range: chartColors },
                margin: 0,
            },
            {
                focus: focusGroupAngle,
                tooltip: {
                    use: tooltip,
                    motion: { type: "spring", stiffness: 170, damping: 18 },
                    className: "font-sans shadow-none rounded-md bg-popover text-popover-foreground border p-2 text-xs",
                    anchor: "group-center",
                    placement: "auto",
                    sort: "color-domain",
                    content: (points) => shadcnTooltipContent(points),
                },
            },
        );
    }, [data]);

    return (
        <Card className="flex w-full max-w-md flex-col">
            <CardHeader className="items-center pb-4">
                <CardTitle>Vendor Compliance Audit</CardTitle>
                <CardDescription>Audit compliance score across SOC2 and ISO27001 standards</CardDescription>
            </CardHeader>
            <CardContent className="pb-0">
                <div className="mx-auto flex aspect-square max-h-[250px] w-full items-center justify-center">
                    <Chart
                        definition={definition}
                        renderer={motionRenderer}
                        initialWidth={250}
                        height={250}
                        ariaLabel="Vendor Compliance Audit Chart"
                    />
                </div>
            </CardContent>
            <CardFooter className="flex-col gap-2 pt-4 text-sm">
                <div className="flex items-center gap-2 leading-none font-medium">
                    Compliance audit rating up by 5.2% this quarter <TrendingUp className="h-4 w-4 text-emerald-500" />
                </div>
                <div className="text-muted-foreground flex items-center gap-2 leading-none">January - June 2024</div>
            </CardFooter>
        </Card>
    );
}

export default RadarLinesOnly;
```