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gis-coord-transform

Convert coordinates and projections across CRS boundaries using pyproj and EPSG codes.

Updated Aug 27, 2026
Search Tags:#coordinate transformation#datum#projection#gis#pyproj#epsg#bbox
One-click install
npx skills add https://github.com/jumboly/gis-skills --skill gis-coord-transform
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: gis-coord-transform
Source: https://github.com/jumboly/gis-skills/tree/main/gis-coord-transform
Command: npx skills add https://github.com/jumboly/gis-skills --skill gis-coord-transform

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill requires pyproj, jgdtrans, and includes scripts (resource) and references (resource) components.

What problem does it solve?

This skill enables precise coordinate transformation across geographic and projected CRSs, supporting conversions between WGS84, JGD2000/2011, Tokyo Datum, UTM zones, and national plane coordinates, and offers map math like bbox calculations.

Core Features & Use Cases

  • Coordinate and projection transformations across EPSG codes and datums
  • High-precision Tokyo Datum to JGD conversions using TKY2JGD and PatchJGD parameter files
  • Bounding box calculation from center, scale, and pixel dimensions for map display and analysis

Quick Start

Try a simple request like 'Convert 35.0, 139.0 from Tokyo Datum to JGD2011'.

Frequently Asked Questions about gis-coord-transform

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I convert coordinates between Tokyo Datum and JGD2011 using pyproj?▼

Coordinate transformation from Tokyo Datum to JGD2011 requires high-precision parameter files like TKY2JGD and PatchJGD, applied through pyproj to accurately shift geodetic datums for GIS workflows.

What is the best way to calculate a bounding box from center coordinates and scale?▼

Calculating a bounding box from center coordinates requires map math using the center point, scale, and pixel dimensions, which computes the precise geographic bbox extents for map display and analysis.

Can I use EPSG codes for coordinate projection transformations across different reference systems?▼

EPSG codes support coordinate projection transformations across various geographic and projected CRS boundaries, enabling conversions between global systems like WGS84 and national plane coordinates.

Does pyproj support UTM zone conversions and national plane coordinate transformations?▼

pyproj supports UTM zone conversions and national plane coordinate transformations by applying geodetic datum shifts across EPSG-defined CRS boundaries for precise geographic data alignment.

Why do I need jgdtrans for high-precision coordinate transformation?▼

jgdtrans is needed for high-precision coordinate transformation because it supplies the specialized PatchJGD parameter files required to accurately convert historical Tokyo Datum coordinates to JGD2000/2011.

What are the limitations of using EPSG codes for datum shifts in GIS?▼

EPSG code datum shifts may lack the centimeter accuracy required for historical Japanese datums, necessitating specialized parameter files like TKY2JGD to handle local grid distortions properly.

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