Blueprint: Taxi Analysis (React.js)
A Geobase quickstart blueprint application for analyzing taxi movement patterns and closest pass interactions.
Video Tutorial
Watch the complete tutorial on building this blueprint:
🎥 View the blueprint tutorial on YouTube
Repository
Access the complete source code and detailed setup instructions:
What’s Included
This React and Geobase application features:
- Animated taxi trajectories with temporal playback controls
- MobilityDB integration for efficient temporal-spatial analysis
- Closest pass detection identifying when taxis come within 10 meters
- Hexagonal grid analysis for regional trip statistics
- Interactive timeline for temporal data exploration
Key Features
Movement Analysis
- Temporal trajectories: Track taxi movements over time with MobilityDB
- Speed calculations: Analyze average speeds and trip durations
- Route optimization: Identify common paths and traffic patterns
- Data cleaning: Automatic filtering and simplification of GPS tracks
Proximity Detection
- Closest pass analysis: Find when taxis pass within 10 meters of each other
- Temporal correlation: Identify exact timestamps of close encounters
- Visual indicators: Animated points showing proximity events
- Safety insights: Analyze potential near-miss situations
Spatial Analytics
- H3 hexagonal grids: Aggregate trip data into hexagonal regions
- Regional statistics: Calculate trip counts, durations, and speeds per area
- Temporal filtering: Analyze patterns across different time periods
- Performance optimization: Efficient spatial indexing and queries
Technology Stack
- Backend: PostgreSQL with PostGIS and MobilityDB extensions
- Frontend: React.js with TypeScript
- Mapping: MapLibre GL JS and Deck.gl
- Spatial Analysis: H3 hexagonal indexing
- Data Processing: Temporal geometry operations
Database Functions
Core Analytics
- Trajectory processing: Convert GPS points to temporal sequences
- Speed analysis: Calculate time-weighted average speeds
- Duration metrics: Measure trip times within specific areas
- Spatial clipping: Extract trajectories within polygon boundaries
Proximity Analysis
- Distance calculations: Find minimum distances between trajectories
- Temporal intersection: Identify when trips overlap in time and space
- Point extraction: Get exact locations of closest approaches
- Performance optimization: Bounding box and temporal filtering
Visualization Features
- Animated playback: Watch taxi movements unfold over time
- Layered display: Toggle between trajectories and proximity events
- Interactive controls: Scrub through time with timeline controls
- Color coding: Different visualizations for various data types
- Fade effects: Smooth animations for temporal events
Use Cases
- Urban planning: Understand traffic flow patterns
- Fleet optimization: Analyze route efficiency
- Safety analysis: Identify high-risk areas for close encounters
- Demand prediction: Forecast taxi needs by location and time
- Infrastructure planning: Optimize road and pickup point locations