A specialized technical skill for identifying, comparing, and planning transformations between global and local geographic coordinate reference systems.
Install & Download
1. ClawHub CLI
The fastest way to install a skill directly from the registry.
npx clawhub@latest install proj
2. Manual Installation
Copy the skill folder to one of these locations
~/.openclaw/skills/ <project>/skills/ Priority: Workspace > Local > Bundled
3. Prompt Installation
Copy this prompt to OpenClaw to install it automatically.
Help me install proj using Clawhub. If Clawhub is not installed, install it first (npm i -g clawhub).
Prefer to download?
Get the raw skill files in a ZIP archive.
What is Project Coordinate Reference Systems?
The Project skill is an essential utility for developers and geospatial professionals working with spatial data. It provides the deep domain expertise required to navigate the complexities of Coordinate Reference Systems (CRS), map projections, and datum transformations. Whether you are dealing with global standards like WGS84 or regional Chinese offset systems like GCJ-02, this skill ensures technical accuracy in every spatial operation.
By leveraging this tool within the Openclaw Skills ecosystem, users can avoid common pitfalls such as axis order swaps (lat/lon vs. lon/lat), unit mismatches (meters vs. degrees), and datum inconsistencies. It serves as a decision-support engine that recommends the optimal EPSG codes for storage, web display, or high-precision engineering measurements.
Project Coordinate Reference Systems Use Cases
- Selecting the correct EPSG code for web mapping vs. database storage.
- Planning transformations between WGS84, CGCS2000, and local UTM zones.
- Resolving offset issues between standard global coordinates and GCJ-02/BD-09 systems.
- Determining the appropriate UTM zone based on specific longitude and hemisphere data.
- Auditing spatial data workflows to prevent measurement errors in distance or area calculations.
How Project Coordinate Reference Systems Works
- The agent identifies the source and target coordinate systems along with the primary objective (e.g., display, analysis, or storage).
- It analyzes the spatial context to determine if a geographic, projected, or provider-specific offset system is required.
- The skill evaluates critical parameters including datum shifts, units, axis order, and transformation accuracy.
- It provides a concrete technical recommendation, frequently referencing standard EPSG identifiers.
- For complex file processing or batch execution, the skill prepares the logic for hand-off to specialized GIS tools like QGIS.
Project Coordinate Reference Systems Setup
To integrate this capability into your environment, ensure you have the Openclaw Skills framework initialized. You can reference this skill in your project configuration:
# Install the core skill package
openclaw install skill-project
# Verify your reference documents are in place
ls ./references/common-systems.md
Project Coordinate Reference Systems Data Schema & Taxonomy
The skill organizes spatial logic based on standard geodetic taxonomies. Metadata and reference values are structured as follows:
| Attribute | Description |
|---|---|
| CRS Type | Geographic (2D/3D), Projected, or Vertical |
| Identifiers | Primary use of EPSG codes (e.g., 4326, 3857) |
| Unit Metrics | Explicit definitions of degrees, meters, or international feet |
| Axis Order | Strict tracking of (Lon, Lat) vs (Lat, Lon) based on software API specs |
| Datum | Reference ellipsoids like WGS 84 or GRS 80 |
Project Coordinate Reference Systems Advanced Features
- Multi-system comparison: Side-by-side analysis of tradeoffs between Web Mercator and local projections.
- Offset System Handling: Specialized logic for managing non-linear shifts in GCJ-02 and BD-09.
- Integration Hooks: Seamlessly transitions to the qgis or cesium skills for file execution and 3D visualization.
- Standards Compliance: Strictly follows semver-driven updates and reproducible example patterns for Openclaw Skills publication.
SKILL.md
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