mcp_geo_convert
Convert coordinates between systems like BD09, GCJ02, WGS84, and Web Mercator using specified methods for accurate geospatial data transformation.
Instructions
在不同坐标系统之间转换坐标。支持BD09（百度）、GCJ02（火星）、WGS84（GPS）和Web Mercator投影坐标系统之间的互相转换。
Input Schema
TableJSON Schema
| Name | Required | Description | Default |
|---|---|---|---|
| latitude | Yes | 纬度 | |
| longitude | Yes | 经度 | |
| method | Yes | 转换方法 |
Implementation Reference
- dist/server.js:180-229 (handler)The handler function for the mcp_geo_convert tool. It receives the conversion method and coordinates, dispatches to the corresponding coordinate transformation method, and returns the result as structured JSON or an error.
async ({ method, longitude, latitude }) => { try { let result; switch (method) { case "BD09toGCJ02": result = this.BD09toGCJ02(longitude, latitude); break; case "GCJ02toBD09": result = this.GCJ02toBD09(longitude, latitude); break; case "WGS84toGCJ02": result = this.WGS84toGCJ02(longitude, latitude); break; case "GCJ02toWGS84": result = this.GCJ02toWGS84(longitude, latitude); break; case "BD09toWGS84": result = this.BD09toWGS84(longitude, latitude); break; case "WGS84toBD09": result = this.WGS84toBD09(longitude, latitude); break; case "WebMercatortoLngLat": result = this.webMercatorToLngLat(longitude, latitude); break; case "LngLattoWebMercator": result = this.lngLatToWebMercator(longitude, latitude); break; } return { content: [{ type: "text", text: JSON.stringify({ method, input: { longitude, latitude }, output: { longitude: result[0], latitude: result[1] } }, null, 2) }] }; } catch (err) { return { content: [{ type: "text", text: `错误: ${err.message}` }], isError: true }; } } - dist/server.js:166-179 (schema)Input schema using Zod for validating the tool parameters: conversion method (enum), longitude (number), and latitude (number).
{ method: z.enum([ "BD09toGCJ02", "GCJ02toBD09", "WGS84toGCJ02", "GCJ02toWGS84", "BD09toWGS84", "WGS84toBD09", "WebMercatortoLngLat", "LngLattoWebMercator" ]).describe("转换方法"), longitude: z.number().describe("经度"), latitude: z.number().describe("纬度") }, - dist/server.js:163-230 (registration)Registration of the mcp_geo_convert tool in the GeoServer's initializeTools method, including name, description, input schema, and handler function.
this.tool( "mcp_geo_convert", "在不同坐标系统之间转换坐标。支持BD09（百度）、GCJ02（火星）、WGS84（GPS）和Web Mercator投影坐标系统之间的互相转换。", { method: z.enum([ "BD09toGCJ02", "GCJ02toBD09", "WGS84toGCJ02", "GCJ02toWGS84", "BD09toWGS84", "WGS84toBD09", "WebMercatortoLngLat", "LngLattoWebMercator" ]).describe("转换方法"), longitude: z.number().describe("经度"), latitude: z.number().describe("纬度") }, async ({ method, longitude, latitude }) => { try { let result; switch (method) { case "BD09toGCJ02": result = this.BD09toGCJ02(longitude, latitude); break; case "GCJ02toBD09": result = this.GCJ02toBD09(longitude, latitude); break; case "WGS84toGCJ02": result = this.WGS84toGCJ02(longitude, latitude); break; case "GCJ02toWGS84": result = this.GCJ02toWGS84(longitude, latitude); break; case "BD09toWGS84": result = this.BD09toWGS84(longitude, latitude); break; case "WGS84toBD09": result = this.WGS84toBD09(longitude, latitude); break; case "WebMercatortoLngLat": result = this.webMercatorToLngLat(longitude, latitude); break; case "LngLattoWebMercator": result = this.lngLatToWebMercator(longitude, latitude); break; } return { content: [{ type: "text", text: JSON.stringify({ method, input: { longitude, latitude }, output: { longitude: result[0], latitude: result[1] } }, null, 2) }] }; } catch (err) { return { content: [{ type: "text", text: `错误: ${err.message}` }], isError: true }; } } ); - dist/server.js:122-127 (helper)Example helper function for WGS84 to GCJ02 coordinate transformation, used by the tool handler. Other similar helpers exist for different conversions.
WGS84toGCJ02(lon, lat) { if (this.isOutOfChina(lon, lat)) { return [lon, lat]; } return this.delta(lon, lat); }