> 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/geocoding.md).

# 在 Duaer 里查地名查询

在 Duaer 里：把地名转换为坐标、国家、行政区、时区、人口与海拔，数据来自 GeoNames 地名库（经 Open-Meteo）。一次成功查询用 1 额度。
## 能拿到什么

Duaer 数据市场里的「地名查询」：把地名转换为坐标、国家、行政区、时区、人口与海拔，数据来自 GeoNames 地名库（经 Open-Meteo）。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 → 地名查询，或打开 [数据市场](/zh/getting-started/data-market.md)。相关：[海拔高程](/zh/getting-started/elevation.md)、[天气预报](/zh/getting-started/weather.md)。

## 适合做什么

- 调用按坐标查询的数据源前，先把地名换成经纬度。
- 区分同名地点，例如多个 Springfield。

## 在画布里检索

1. 打开节点创建器，选 Duaer 数据 → Place lookup。
2. 填 Place（如 Springfield）；Country 可选（两位国家代码，如 US）。
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/geocoding?place=Springfield&country=US
- 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-geocoding
description: >-
  Duaer Place lookup. Turn a place name into coordinates, country, region, time zone, population, and elevation from the GeoNames gazetteer via Open-Meteo.
  One successful search uses 1 Duaer credit.
---

# Duaer Place lookup

Duaer Place lookup turns a city, town, or place name into coordinates and basic facts. Several places can share a name, so Duaer returns the best matches first; add `country` to narrow them.

## When to use

- Get latitude and longitude before calling a point-based source.
- Tell apart places that share a name, such as Springfield.

## When not to use

- Weather at a place. Use https://skills.duaer.com/weather.md.
- Ground height only. Use https://skills.duaer.com/elevation.md.

## Call

`GET https://api.duaer.com/v1/data/geocoding?place=Springfield&country=US`

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`.

- `place` — City, town, or place name, such as Springfield.
- `country` — Optional. Two-letter country code, such as US.
- `limit` — Optional. Rows to return, from 1 to 20. Default 10.

## Examples

- `GET https://api.duaer.com/v1/data/geocoding?place=Springfield&country=US` — places called Springfield in the United States.
- `GET https://api.duaer.com/v1/data/geocoding?place=Kyoto&limit=1` — the best match for Kyoto.

## Result

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

- `name`, `country`, `countryCode`, `region`, `district` — place and its administrative areas.
- `latitude`, `longitude`, `timezone` — position and IANA time zone.
- `population`, `elevationM` — people and height above sea level, when known.
- `featureCode`, `geonameId` — GeoNames feature class and id.

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/elevation.md — Duaer Elevation
- https://skills.duaer.com/weather.md — Duaer Weather forecast

```
## Questions

### Duaer 的地名查询检索扣多少额度？

查到结果时扣 1 额度；没有结果或出错不扣。

### Duaer 地名查询遇到同名地点怎么办？

在 Duaer 地名查询里加 Country（两位代码）缩小范围，结果按匹配度排序。

## 相关

- [在 Duaer 里查海拔高程](https://doc.duaer.com/zh/getting-started/elevation.md)
- [在 Duaer 里查天气预报](https://doc.duaer.com/zh/getting-started/weather.md)