Project Overview
Developed an innovative historical GIS platform that allows users to explore the past through interactive maps. The platform overlays historical cartographic data on modern base maps, enabling temporal comparison and analysis.
We created multiple spatial layers including historical railroad networks, old city boundaries, and extinct geographical features, providing researchers and history enthusiasts with unprecedented insights into geographical evolution.
The Challenge
The project faced several technical challenges:
- Georeferencing historical maps with varying projections and accuracies
- Creating smooth transitions between different time periods
- Handling large raster datasets efficiently in the browser
- Ensuring accurate alignment between historical and modern features
- Building an intuitive interface for non-technical users
The Solution
We implemented a comprehensive GIS solution using modern web technologies:
- Custom georeferencing pipeline using GDAL and Python
- Vector tile server for efficient map data delivery
- WebGL-powered rendering for smooth performance
- Temporal slider with opacity controls for comparisons
- PostGIS database for spatial queries and analysis
- Progressive web app for offline functionality
Key Features & Deliverables
Interactive temporal GIS layers
Historical railroad network mapping
Opacity slider for past-present comparison
Mobile-responsive map interface
Downloadable historical datasets
Collaborative annotation system
Technology Stack
Mapbox GL
PostGIS
GDAL
Python
React
Node.js
Results & Impact
The platform has become a valuable resource for:
- Over 50,000 monthly active users
- Integration with 3 major university research projects
- Coverage of 100+ historical map layers
- Featured in National Geographic's digital archaeology series
- 95% user satisfaction rate