# showTooltipAtSegment

Polar-only — programmatic tooltip open on a (direction, series) cell.

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

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## 정의

```typescript
showTooltipAtSegment(categoryIndex: number, seriesIdOrIndex: string | number): Promise<PolarChartPointEventDetail | null>
```

| 인수 | 타입 | 필수 여부 |
| --- | --- | --- |
| `categoryIndex` | `number` | 필수 |
| `seriesIdOrIndex` | `string \| number` | 필수 |

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

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

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## 관련 차트

- [sy-polar-chart](https://chart.syidax.com/ko/docs/components/polar.md#method-showTooltipAtSegment)