---
title: DEMSampler
source: https://vjmap.com/doc/DEMSampler.html
---

# DEMSampler
Helper 类计算并缓存在切片级别查找高程偏移所需的数据。

### Parameters
- `demTile` **Tile**
- `scale` **`number`**
- `offset` **\[ `number`, `number`\]**