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crosstech-errors-coordinate-mismatch

Diagnose coordinate-related BIM errors across BIM↔GIS and BIM↔web-viewer workflows.

7|1|Updated Mar 20, 2026
Search Tags:#diagnostics#GIS#BIM#georeferencing#IFC#coordinate-errors
One-click install
npx skills add https://github.com/OpenAEC-Foundation/Cross-Tech-AEC-Claude-Skill-Package --skill crosstech-errors-coordinate-mismatch
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: crosstech-errors-coordinate-mismatch
Source: https://github.com/OpenAEC-Foundation/Cross-Tech-AEC-Claude-Skill-Package/tree/main/skills/source/crosstech-errors/crosstech-errors-coordinate-mismatch
Command: npx skills add https://github.com/OpenAEC-Foundation/Cross-Tech-AEC-Claude-Skill-Package --skill crosstech-errors-coordinate-mismatch

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes references (resource) components.

What problem does it solve?

Use when BIM models appear at the wrong location, wrong scale, or wrong orientation in GIS or web viewers. Provides a diagnostic decision tree for coordinate-related errors: Y-up vs Z-up axis swap, unit mismatches (mm/m/ft), missing georeferencing, CRS mismatches, and datum transformation errors. Covers coordinate debugging across Blender, Three.js, QGIS, IFC, Revit, and FreeCAD.

Core Features & Use Cases

  • Diagnostic decision tree for identifying axis swaps, unit mismatches, georeferencing gaps, and CRS conflicts across BIM/GIS pipelines.
  • Cross-tool coverage for Blender, Three.js, QGIS, IFC, Revit, and FreeCAD with actionable fixes and best practices.
  • Real-world scenarios and step-by-step workflows to validate and correct coordinates in BIM↔GIS integrations.

Quick Start

Run the coordinate-diagnostic workflow against your IFC/BIM file to locate and fix georeferencing and axis issues.

Frequently Asked Questions about crosstech-errors-coordinate-mismatch

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

FAQPage Schema
Why does my IFC BIM model appear at the wrong location or scale in QGIS?▼

BIM model misplacement in GIS usually stems from missing IfcMapConversion, CRS mismatches, or unit errors. This diagnostic decision tree identifies whether the issue is a georeferencing gap, a millimeter vs meter mismatch, or an IfcProjectedCRS conflict.

How do I diagnose a coordinate mismatch when exporting IFC from Revit to Blender?▼

To diagnose coordinate mismatches from Revit to Blender, run the cross-tool diagnostic workflow to check for missing IfcMapConversion, axis vector swaps, and orthogonal height handling errors. It provides deterministic fixes for these georeferencing gaps.

What causes axis swap and unit mismatch issues in BIM to GIS workflows?▼

Axis swap and unit mismatch issues occur when BIM coordinate systems lack proper IfcMapConversion or IfcProjectedCRS definitions. The diagnostic decision tree traces these errors by validating axis vectors and checking millimeter, meter, and feet unit conversions.

Does this diagnostic workflow support FreeCAD and Three.js coordinate debugging?▼

Yes, the diagnostic workflow supports FreeCAD and Three.js coordinate debugging. It applies cross-tool checks for axis swaps, unit mismatches, and georeferencing gaps to identify misplacements and misorientation across BIM and web viewer pipelines.

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