CHEK Validation Results Viewer

This is a lightweight Flask-based web application for uploading, validating, and visualizing CityJSON files. It leverages the CHEK Validator to validate CityJSON data against SHACL profiles and converts the data to a GLB format for 3D visualization.

🚀 Features

• Upload a CityJSON file and convert it to a 3D GLB model.
• Validate CityJSON against standard or custom SHACL profiles via CHEK.
• Download the resulting GLB model for visualization.
• Proxy-based validation to handle CORS and simplify client-side logic.

🛠️ Tech Stack

• Python 3
• Flask
• cjio for CityJSON parsing and GLB export
• HTML (frontend in templates/index.html)
• CHEK Validator API

📦 Installation

Clone & Install Dependencies

Clone the repo

git clone https://github.com/tudelft3d/3dinteractivevalidation.git
cd 3dinteractivevalidation

Create a virtual env with all the dependencies

python3 -m .venv venv
source .venv/bin/activate
pip install -r requirements.txt

Run the application

python3 app.py