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@zealgeo/mcp-geo-server

v1.2.0

Published

MCP Server for coordinate conversion and spatial calculations

Readme

@zealgeo/mcp-geo-server

这是一个基于 Model Context Protocol (MCP) 的地理处理工具服务器,提供坐标系统转换、距离计算、面积计算等空间分析功能。

安装

"geo-mcp-server": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y"
        "@zealgeo/mcp-geo-server"
      ]
    }

功能

支持以下坐标系统之间的转换:

  • BD09(百度坐标系)
  • GCJ02(火星坐标系)
  • WGS84(GPS坐标系)
  • Web Mercator(网络墨卡托投影)

支持的转换方法:

  • BD09 与 GCJ02 互转
  • WGS84 与 GCJ02 互转
  • BD09 与 WGS84 互转
  • Web Mercator 与经纬度互转

支持的空间计算:

  • 计算折线距离(支持米、千米单位)
  • 计算多边形面积(支持平方米、平方公里、公顷单位)
  • 支持多种坐标系统输入(WGS84、GCJ02、BD09)

MCP Tools

mcp_geo_convert

坐标系统转换工具。支持 BD09、GCJ02、WGS84 和 Web Mercator 之间的互相转换。

参数:

  • method: 转换方法
    • BD09toGCJ02: 百度坐标系转火星坐标系
    • GCJ02toBD09: 火星坐标系转百度坐标系
    • WGS84toGCJ02: WGS84转火星坐标系
    • GCJ02toWGS84: 火星坐标系转WGS84
    • BD09toWGS84: 百度坐标系转WGS84
    • WGS84toBD09: WGS84转百度坐标系
    • WebMercatortoLngLat: Web墨卡托转经纬度
    • LngLattoWebMercator: 经纬度转Web墨卡托
  • longitude: 经度值
  • latitude: 纬度值

mcp_geo_calculate_distance

计算折线距离。基于 Web Mercator 投影进行平面距离计算。

参数:

  • coordinates: 折线坐标点数组 [[lon1,lat1], [lon2,lat2],...]
  • unit: 长度单位(meters米[默认]、kilometers千米)
  • coordType: 输入坐标类型(WGS84[默认]、GCJ02BD09

mcp_geo_calculate_area

计算多边形面积。基于 Web Mercator 投影进行平面面积计算。

参数:

  • coordinates: 多边形坐标点数组 [[lon1,lat1], [lon2,lat2],...]
  • unit: 面积单位(square_meters平方米[默认]、square_kilometers平方公里、hectares公顷)
  • coordType: 输入坐标类型(WGS84[默认]、GCJ02BD09

坐标系说明

BD09(百度坐标系)

百度地图使用的坐标系统,在GCJ02基础上再次加密。

GCJ02(火星坐标系)

中国国测局制定的地理信息系统坐标系统,是对WGS84进行加密后的坐标系。

WGS84

GPS原始坐标系统,目前广泛使用的GPS全球卫星定位系统使用的坐标系统。

Web Mercator

网页地图使用的投影坐标系统,将球面坐标转换为平面坐标。用于距离和面积计算时可以获得更准确的结果。

注意事项

  1. 坐标转换精度与原始数据质量有关
  2. 中国大陆以外的坐标,WGS84与GCJ02坐标系转换将直接返回原始坐标
  3. Web Mercator坐标通常以米为单位
  4. 距离和面积计算使用Web Mercator投影后的平面计算方法,适用于中小尺度的计算
  5. 对于跨越大洲的超长距离或超大面积,建议使用球面计算方法
  6. 多边形面积计算不需要手动闭合,程序会自动处理闭合