# selectRowAt

Treemap: enter a positive branch by ID, or null for the forest. Requires drilldown. Select a visible Gantt task by its normalized source index. Parallel Coordinates: source rows and independent axis geometry.

Canonical: https://chart.syidax.com/ko/docs/methods/selectRowAt/

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## 정의

```typescript
selectRowAt(index: number): Promise<ParallelCoordinatesHitDetail|null>
```

| 인수 | 타입 | 필수 여부 |
| --- | --- | --- |
| `index` | `number` | 필수 |

반환 타입: `Promise<ParallelCoordinatesHitDetail|null>`. 요소 등록이 끝난 뒤 메서드를 호출하고 Promise 결과를 await로 기다리세요.

- [ParallelCoordinatesHitDetail](https://chart.syidax.com/ko/docs/types/ParallelCoordinatesHitDetail.md) — 타입 정의

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## 관련 차트

- [sy-parallel-coordinates](https://chart.syidax.com/ko/docs/components/parallel-coordinates.md#method-selectRowAt)