# Gantt

> Who is busy when, lane by lane. Sample data: trucks at six docks from 06:00 to 14:00, loading, unloading, waiting and delayed.

- Type 037 · Schedule and status
- Component: `<Gantt>`, the same name as the Figma component
- Install: `npx shadcn add @chartory/gantt` (free in Hearth: the public registry, no token; Signal with Code and Complete)
- Type page: https://usechartory.com/charts/gantt

## Installation

1. **Set up the registry once.** This chart is free in Hearth and MIT licensed: no token. Add @chartory to components.json once (the URL alone, no headers), or skip this when another chart is already installed. [Installation guide](https://usechartory.com/docs/installation)

2. **Add the chart.** One command adds the Gantt component to your project.

```bash
npx shadcn add @chartory/gantt
```

3. **Use it.** Pass your rows. The props are the Figma properties.

usage.tsx:

```tsx
import { Gantt }
  from "@/components/chartory/gantt"

<Gantt
  data={dockSchedule}
  size="m"
  legend
/>
```

## Props

### `<Gantt>`

Every prop but data is a Figma property with the same name and values.

| Prop | Type | Default | Note |
| --- | --- | --- | --- |
| data | GanttData | Required | The chart's data. The tables below list every field. |
| size | "xs" \| "s" \| "m" \| "l" | "m" | The size class. Each one is laid out again from the data. |
| legend | boolean | true | Shows the legend row under the plot. |

### GanttData

The data prop: one object for the whole chart.

| Prop | Type | Default | Note |
| --- | --- | --- | --- |
| rows | string[] | Required | The row labels, in order. |
| start | number | Required | The start. |
| end | number | Required | The end. |
| ticks | [number, string][] | Required | The axis ticks: [value, label] pairs. |
| bars | [number, number, number, string, string][] | Required | The bar series. |
| now? | number | — | Where now is on the axis. |
| yW? | number | 76 | The width of the y axis label column, in px. |

## Gantt chart: a React and Figma chart in four sizes

### What does a gantt chart show?

A Gantt chart puts each resource on its own lane and draws its jobs as bars across the day, with a line for now. Overlaps, gaps and delays show at once. Use it for dock schedules, project plans and room or machine bookings.

Chartory ships it as a Figma component and a React component with the same name. The code installs from the shadcn registry with one command and lands in your project as a file you own.

### What is the Gantt component?

It is one **<Gantt>** component. Its props are the Figma properties with the same names and values, and the props table above lists them. The data is jobs with a lane, a start, an end and a state.

Sizes **XS**, **S**, **M** and **L** re-lay the chart out from the data instead of scaling it, so labels stay readable at every size.

### When should I use it?

- **Is it lanes over clock time?** Yes means the gantt fits.
- **Are jobs bars, not trips?** Yes means the gantt fits.
- **Is it a plan, not one trace?** Yes means the gantt fits.

### When does another type fit better?

- **Items over weeks.** Use Block timeline instead.
- **Vehicles between stops.** Use Marey schedule instead.
- **One run's spans.** Use Span waterfall instead.

## Gantt questions

### Does the Gantt chart work with shadcn/ui?

Yes. It installs through the shadcn registry with the shadcn CLI, and the file lands in your project.

### How do I install it?

It is free in Hearth and MIT licensed: add the @chartory registry URL once, no token, then run npx shadcn add @chartory/gantt. The Installation guide has the steps.

### Can my coding agent install it?

Yes. Connect the Chartory MCP server and ask for the gantt chart; the agent runs the same command and you review the diff.

### What data does it expect?

Jobs with a lane, a start, an end and a state. The sample data comes with the component, and the props table lists every field.

### Which sizes does it ship in?

XS, S, M and L, in Figma and in code. Each size is laid out again from the data, so text and lines keep their size.

### Is it in the Figma file too?

Yes. chart/037-gantt has the same properties as the component.

### Does it follow light and dark mode?

Yes. Every paint is a token, so the chart follows light and dark mode and the collection you pick.

### Which plan has the code?

None for Hearth: it is free in the public registry, no token. The Signal collection (@chartory/signal) comes with Code and Complete.