Producing GeoPackages with massivegeopackage

Introduction

• Massivegeopackage* is a Python package for building a GeoPackage from very large raster or elevation datasets.

The core GDAL tools gdalwarp, gdal_translate and gdaladdo seem to struggle with mosaicing very large raster datasets. When the size of the source dataset is larger than 15-20 GB, processing time seems to increase exponentially.

This Python package will convert each source file to individual GeoPackages within a common tile matrix. This is done in parallel using the multiprocessing module. Completed files will immediately be queued to be merged into a base GeoPackage. The merging is very efficient because it consists of SQL INSERT statements only - no geoprocessing.

Installation

The package is distributed as a Python wheel-file. Install it using pip:

python -m pip install c:\path\massivegeopackage-1.3.0-py3-none-any.whl

Usage

The package consists of two separate modules: `raster` and `elevation`. After installation, the modules can be run with the commands:

python -m massivegeopackage.raster

python -m massivegeopackage.elevation

If the package cannot be installed for whatever reason, it is also possible to unzip the .whl file, and then run the script files directly:

python c:\massivegeopackage-1.3.0-py3-none-any\massivegeopackage\raster.py

python c:\massivegeopackage-1.3.0-py3-none-any\massivegeopackage\elevation.py

Parameters are then provided through input prompts.