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引用文献《中华人民共和国自然资源部. 中国地图 1∶740万 对开. (审图号:GS(2023)2767号)》添加审图号信息
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**Source**

本项目基于 Natural Earth [1:50m Cultural Vectors Admin 0 – Countries](https://www.naturalearthdata.com/downloads/50m-cultural-vectors/50m-admin-0-countries-2/) 地图生成,为降低文件体积,使用 [Mapshaper](https://github.com/mbloch/mapshaper) 以 Douglas-Peucker 方法进行简化处理(-simplify dp 10% keep-shapes),Polygon 坐标精确到小数点后 6 位。
本项目基于 Natural Earth [1:50m Cultural Vectors Admin 0 – Countries](https://www.naturalearthdata.com/downloads/50m-cultural-vectors/50m-admin-0-countries-2/) 地图生成,为降低文件体积,使用 [Mapshaper](https://github.com/mbloch/mapshaper) 以 Douglas-Peucker 算法进行简化处理(-simplify dp 10% keep-shapes),Polygon 坐标精确到小数点后 6 位。

此外通过参考下列地图对结果进行调整:
- 参照阿里云 DataV [高德地图](https://datav.aliyun.com/portal/school/atlas/area_selector)
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- [1] [Natural Earth](https://www.naturalearthdata.com/). [1:50m Cultural Vectors Admin 0 – Countries](https://www.naturalearthdata.com/downloads/50m-cultural-vectors/50m-admin-0-countries-2/). (version 5.1.1).
- [2] [Natural Earth](https://www.naturalearthdata.com/). [1:10m Cultural Vectors Admin 0 – Countries](https://www.naturalearthdata.com/downloads/10m-cultural-vectors/10m-admin-0-countries/). (version 5.1.1).
- [3] [阿里云 DataV](https://datav.aliyun.com/). [高德地图](https://datav.aliyun.com/portal/school/atlas/area_selector). (2021.5 版本数据).
- [4] [中华人民共和国自然资源部](https://www.mnr.gov.cn/). [中国地图 1∶740万 对开](http://bzdt.ch.mnr.gov.cn/browse.html?picId=%224o28b0625501ad13015501ad2bfc2187%22).
- [4] [中华人民共和国自然资源部](https://www.mnr.gov.cn/). [中国地图 1∶740万 对开](http://bzdt.ch.mnr.gov.cn/browse.html?picId=%224o28b0625501ad13015501ad2bfc2187%22). (审图号:GS(2023)2767号).
- [5] [中华人民共和国外交部](https://www.mfa.gov.cn/). [国家(地区)列表](https://www.mfa.gov.cn/web/gjhdq_676201/gj_676203/yz_676205/).
- [6] [国际标准化组织](https://www.iso.org/). [ISO 3166 Country Codes](https://www.iso.org/iso-3166-country-codes.html).
- [7] [联合国](https://www.un.org/). [会员国名单](https://www.un.org/zh/about-us/member-states).
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