> For the complete documentation index, see [llms.txt](https://doc.duaer.com/zh/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://doc.duaer.com/zh/getting-started/elevation.md).

# 在 Duaer 里查海拔高程

在 Duaer 里：按地名或坐标查询地面海拔，数据来自哥白尼 90 米数字高程模型。一次成功查询用 1 额度。
## 能拿到什么

Duaer 数据市场里的「海拔高程」：按地名或坐标查询地面海拔，数据来自哥白尼 90 米数字高程模型。查到结果时用 1 额度，结果交给数字组织的下一个节点。

从节点创建器选 Duaer 数据 → 海拔高程，或打开 [数据市场](/zh/getting-started/data-market.md)。相关：[地名查询](/zh/getting-started/geocoding.md)、[太阳辐射与气候（NASA POWER）](/zh/getting-started/nasa-power.md)。

## 适合做什么

- 查城市或场址的海拔。
- 给调查表里的坐标补上高程。

## 在画布里检索

1. 打开节点创建器，选 Duaer 数据 → Elevation。
2. 填 Place（如 Lhasa），或填 Latitude + Longitude。
3. Limit 默认 10，最大 20。执行。

查到结果才扣 1 额度；没有结果、输入有误或上游失败都不扣。

## 用 API 调用

- GET https://api.duaer.com/v1/data/elevation?place=Lhasa
- Authorization: Bearer <Duaer key>

下方是与数据市场「复制技能」相同的英文技能，含参数、示例与返回字段。

## 调用技能（英文）

与数据市场「复制技能」一致。

```
---
name: duaer-elevation
description: >-
  Duaer Elevation. Ground height above sea level for a place or coordinates, from the Copernicus 90 m digital elevation model.
  One successful search uses 1 Duaer credit.
---

# Duaer Elevation

Duaer Elevation returns the ground height above sea level for one point, from the Copernicus 90 m digital elevation model. Give a place name or exact coordinates.

## When to use

- Check the altitude of a city or a site.
- Add height to coordinates in a survey table.

## When not to use

- Coordinates for a name. Use https://skills.duaer.com/geocoding.md.
- Weather at altitude. Use https://skills.duaer.com/weather.md.

## Call

`GET https://api.duaer.com/v1/data/elevation?place=Lhasa`

Header: `Authorization: Bearer <Duaer key>`

Use an account key or a model API key.

Get a Duaer key: https://skills.duaer.com/keys.md

## Parameters

Provide `place`, or `latitude` and `longitude`.

- `place` — Place name, such as Lhasa. Duaer looks up its coordinates.
- `latitude`, `longitude` — Optional. Coordinates instead of a place name.

## Examples

- `GET https://api.duaer.com/v1/data/elevation?place=Lhasa` — height of Lhasa.
- `GET https://api.duaer.com/v1/data/elevation?latitude=27.9881&longitude=86.925` — height near the summit of Everest.

## Result

The response is `{ "items": [...] }`. Each item has `source`, `title`, `url`, and `summary`, plus:

- `place` — resolved place name.
- `latitude`, `longitude` — the point used.
- `elevationM` — metres above sea level.

The search returns one row.

Fields without a value are left out.

## Credits

A search that returns at least one row uses 1 credit.
An empty search, a search that finds nothing, or a failed search uses 0.
Wrong input returns 400 with a message and uses 0.
No remaining credits returns 402 and does not search.
A missing key returns 401.

## Related

- https://skills.duaer.com/geocoding.md — Duaer Place lookup
- https://skills.duaer.com/nasa-power.md — Duaer Solar and climate (NASA POWER)

```
## Questions

### Duaer 的海拔高程检索扣多少额度？

查到结果时扣 1 额度；没有结果或出错不扣。

### Duaer 海拔高程的精度如何？

Duaer 海拔高程使用哥白尼 90 米数字高程模型，是网格平均值，不是测绘点高程。

## 相关

- [在 Duaer 里查地名查询](https://doc.duaer.com/zh/getting-started/geocoding.md)
- [在 Duaer 里查太阳辐射与气候（NASA POWER）](https://doc.duaer.com/zh/getting-started/nasa-power.md)