tile-archive-utils 0.0.1

Utilities facilitating tile extraction from and integration into tile archives

Tile Archive Utils

This package provides command-line utilities supporting the extraction of tiles from PMTiles archives to ZXY directories and the construction of MBTiles archives from ZXY directories. Combined with the PMTiles command-line utilities, this package makes it possible to extract tiles from a PMTiles archive, transform the tiles, and assemble the transformed tiles into a derivative PMTiles archive.

Installation

Install GDAL + Python bindings (Required)

Option 1: Using conda (Recommended)

conda install -c conda-forge gdal

This installs both the GDAL library and the Python bindings, eliminating the risk of version mismatch.

Option 2: Using system package manager + pip

# Ubuntu/Debian
sudo apt-get install gdal-bin libgdal-dev
pip install gdal

# macOS with Homebrew  
brew install gdal
pip install gdal

Ensure the GDAL library and Python binding versions match for proper execution.

Note that Docker is discouraged for use with this package as the volume of file I/O significantly degrades performance when running within a VM.

Install tile-archive-utils

pip install -e .

Commands

After installation, you'll have access to two command-line tools:

pmtiles-zxy

Extracts tiles from a PMTiles archive into a ZXY hierarchical directory structure.

pmtiles-zxy <PMTiles archive> <output directory> <min zoom> <max zoom>

Example:

# Extract zoom levels 0-10 from map.pmtiles to the directory tiles
pmtiles-zxy tileset.pmtiles tiles 0 10

Features:

• Robust extraction with detailed error reporting
• Progress tracking with tqdm
• Seamless continuation following interruptions
• Memory-efficient processing by zoom level
• Built-in GDAL script bundling

zxy-mbtiles

Converts ZXY hierarchical directory structures into MBTiles archives.

zxy-mbtiles <ZXY directory> <output MBTiles file> [options]

Options:

• --name <string>: Tileset name
• --description <string>: Tileset description
• --format <format>: Tile format (default: png, supports: png, jpg, webp, pbf)
• --batchsize <integer>: Tile batch size for database inserts (default: 1000)

Examples:

# Basic conversion
zxy-mbtiles tiles tileset.mbtiles

# With custom metadata
zxy-mbtiles tiles tileset.mbtiles --name "Hillshade tiles" --description "Pre-rendered terrain data"

# With tile format and batch size specified
zxy-mbtiles tiles tileset.mbtiles --format jpg --batchsize 10000

Features:

• Optimized SQLite database creation
• Progress tracking with tqdm
• Multiple tile format support

Directory Structure

The package has the following structure:

tile-archive-utils/
├── pyproject.toml
├── README.md
├── src/
│   └── tile_archive_utils/
│       ├── __init__.py
│       ├── pmtiles_to_zxy.py    # PMTiles → ZXY converter
│       ├── zxy_to_mbtiles.py    # ZXY → MBTiles converter
│       └── gdal_cp.py           # Bundled GDAL utility

Requirements

• Python 3.10+
• GDAL + Python bindings
• tqdm
• click

ZXY Directory Format

The ZXY format follows this hierarchical structure:

tiles/
├── 0/
│   └── 0/
│       └── 0.png
├── 1/
│   ├── 0/
│   │   ├── 0.png
│   │   └── 1.png
│   └── 1/
│       ├── 0.png
│       └── 1.png
└── ...

Where:

• First level: Zoom level (Z)
• Second level: Column/X coordinate
• Files: Row/Y coordinate with tile extension