# syncfusion-react-heatmap

Walks the agent through building a React heatmap with axes, legend and tooltips. Handy when a matrix of values needs colour.

- skill · `type=skill` · Claude Code, Codex, Cursor, GitHub Copilot, Gemini CLI, OpenCode · 658 installs · ★ 3
- Author: Syncfusion Inc
- License: not stated · policy=link-only · description only; the file stays with the author
- Source: https://github.com/syncfusion/react-ui-components-skills/tree/HEAD/skills/syncfusion-react-heatmap/SKILL.md
- Updated: 2026-10-23
- HTML: https://affpapa.org/en/nevibecode/skills/syncfusion-react-heatmap

## What it does

The skill guides an agent through `HeatMapComponent` from `@syncfusion/ej2-react-heatmap`. Reference files cover setup, binding data, axes, legend, styling, cell selection and events. One file deals with accessibility and common problems, including moving from EJ1 to EJ2.

Data arrives as a 2D array or JSON. Axes can be numerical, categorical or datetime, colours come from a gradient or a fixed palette, and rendering switches between SVG and Canvas. Bubble heatmaps are covered too, along with methods such as `export`, `print` and `clearSelection`.

You need a React project with the Syncfusion package installed and a theme stylesheet imported, for instance `@syncfusion/ej2-base/styles/material.css`. Skip that import and the chart renders unstyled, so wire it up before the first run.

## Install

### Claude Code (native platform)

1. **Skills CLI (Vercel)**
```bash
npx skills add syncfusion/react-ui-components-skills --skill syncfusion-react-heatmap -a claude-code
```

2. **Manually: put the files in place**
- File: `~/.claude/skills/syncfusion-react-heatmap/SKILL.md` — Copy the whole skill folder; for one project use .claude/skills/syncfusion-react-heatmap/

### Codex

1. **Skills CLI (Vercel)**
```bash
npx skills add syncfusion/react-ui-components-skills --skill syncfusion-react-heatmap -a codex
```

2. **Manually: put the files in place**
- File: `.agents/skills/syncfusion-react-heatmap/SKILL.md` — For all projects use ~/.agents/skills/

### Cursor

1. **Skills CLI (Vercel)**
```bash
npx skills add syncfusion/react-ui-components-skills --skill syncfusion-react-heatmap -a cursor
```

2. **Manually: put the files in place**
- File: `.cursor/skills/syncfusion-react-heatmap/SKILL.md` — Cursor also reads .agents/skills/ and .claude/skills/

### GitHub Copilot

1. **GitHub CLI**
```bash
gh skill install syncfusion/react-ui-components-skills syncfusion-react-heatmap
```

2. **Manually: put the files in place**
- File: `.github/skills/syncfusion-react-heatmap/SKILL.md`

### Gemini CLI

1. **Skills CLI (Vercel)**
```bash
npx skills add syncfusion/react-ui-components-skills --skill syncfusion-react-heatmap -a gemini-cli
```

2. **Platform CLI**
```bash
gemini skills install https://github.com/syncfusion/react-ui-components-skills --path skills/syncfusion-react-heatmap
```

### Windsurf (Devin Desktop)

**Manually: put the files in place**
- File: `.devin/skills/syncfusion-react-heatmap/SKILL.md` — The legacy .windsurf/skills/ path still works

### OpenCode

**Skills CLI (Vercel)**
```bash
npx skills add syncfusion/react-ui-components-skills --skill syncfusion-react-heatmap -a opencode
```

### Claude.ai

**Claude.ai**
- Zip the folder and upload it in Settings → Capabilities → Skills

Where a file is given instead of a command, copy the files from the source to that path: https://github.com/syncfusion/react-ui-components-skills/tree/HEAD/skills/syncfusion-react-heatmap/SKILL.md

## When to use it
- show a matrix of values as coloured cells
- set up numerical, categorical or datetime axes
- add a gradient legend and hover tooltips
- handle cell selection and custom events
- keep a large heatmap rendering smoothly

## Example prompts
- Build a weekday-by-hour activity heatmap with `HeatMapComponent`
- Apply a gradient palette and put the legend on the right
- Wire a cell selection handler and log the value

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From the same set: [syncfusion/react-ui-components-skills](https://affpapa.org/en/nevibecode/by/syncfusion/react-ui-components-skills.md) — 57 cards

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