geoparquet-io 0.2.0

Fast I/O and transformation tools for GeoParquet files

geoparquet-io

Fast I/O and transformation tools for GeoParquet files using PyArrow and DuckDB.

Features

• Fast: Built on PyArrow and DuckDB for high-performance operations
• Comprehensive: Sort, partition, enhance, and validate GeoParquet files
• Spatial Indexing: Add bbox, H3 hexagonal cells, KD-tree partitions, and admin divisions
• Best Practices: Automatic optimization following GeoParquet 1.1 spec
• Flexible: CLI and Python API for any workflow
• Tested: Extensive test suite across Python 3.9-3.13 and all platforms

Installation

# With uv (recommended)
uv pip install geoparquet-io

# Or with pip
pip install geoparquet-io

# From source
git clone https://github.com/cholmes/geoparquet-io.git
cd geoparquet-io
uv sync --all-extras

For full development set up see the getting started instructions.

Requirements

• Python 3.9 or higher
• PyArrow 12.0.0+
• DuckDB 1.1.3+

Quick Start

# Inspect file structure and metadata
gpio inspect myfile.parquet

# Check file quality and best practices
gpio check all myfile.parquet

# Add bounding box column for faster queries
gpio add bbox input.parquet output.parquet

# Sort using Hilbert curve for spatial locality
gpio sort hilbert input.parquet output_sorted.parquet

# Partition into separate files by country
gpio partition admin buildings.parquet output_dir/

Documentation

Full documentation is available at: https://cholmes.github.io/geoparquet-io/

• Getting Started - Installation and quick start guide
• User Guide - Detailed documentation for all features
• CLI Reference - Complete command reference
• Python API - Python API documentation
• Examples - Real-world usage patterns

Usage Examples

Inspect and Validate

# Quick metadata inspection
gpio inspect data.parquet

# Preview first 10 rows
gpio inspect data.parquet --head 10

# Check against best practices
gpio check all data.parquet

Enhance with Spatial Indices

# Add bounding boxes
gpio add bbox input.parquet output.parquet

# Add H3 hexagonal cell IDs
gpio add h3 input.parquet output.parquet --resolution 9

# Add KD-tree partition IDs (auto-balanced)
gpio add kdtree input.parquet output.parquet

# Add country codes via spatial join
gpio add admin-divisions buildings.parquet output.parquet

Optimize and Partition

# Sort by Hilbert curve
gpio sort hilbert input.parquet sorted.parquet

# Partition by H3 cells
gpio partition h3 large.parquet output_dir/ --resolution 7

# Partition by country
gpio partition admin buildings.parquet by_country/

Python API

from geoparquet_io.core.add_bbox_column import add_bbox_column
from geoparquet_io.core.hilbert_order import hilbert_order

# Add bounding box
add_bbox_column("input.parquet", "output.parquet", verbose=True)

# Sort by Hilbert curve
hilbert_order("input.parquet", "sorted.parquet", add_bbox=True)

Contributing

Contributions are welcome! See our Contributing Guide for details.

Development

# Clone repository
git clone https://github.com/cholmes/geoparquet-io.git
cd geoparquet-io

# Install with all development dependencies
uv sync --all-extras

# Run tests
uv run pytest

# Run linting
uv run ruff check .

# Build docs locally
uv run mkdocs serve

License

Apache 2.0 - See LICENSE for details.

Links

• Documentation: https://cholmes.github.io/geoparquet-io/
• PyPI: https://pypi.org/project/geoparquet-io/ (coming soon)
• Issues: https://github.com/cholmes/geoparquet-io/issues
• Source: https://github.com/cholmes/geoparquet-io