CoastPy

Python tools for cloud-native coastal analytics.

Installation

$ pip install coastpy

Data

The data that is produced with this software can be directly accessed via the cloud using tools like DuckDB; see the tutorials and analytics other methods and latest instructions.

Global Coastal Transect System (GCTS)

Cross-shore coastal transects are essential to coastal monitoring, offering a consistent reference line to measure coastal change, while providing a robust foundation to map coastal characteristics and derive coastal statistics thereof.

The Global Coastal Transect System consists of more than 11 million cross-shore coastal transects uniformly spaced at 100-m intervals alongshore, for all OpenStreetMap coastlines that are longer than 5 kilometers.

# Download all transects located in the United States.
duckdb -c "COPY (SELECT * FROM 'az://coclico.blob.core.windows.net/gcts/release/2024-08-02/*.parquet' AS gcts WHERE gcts.country = 'US') TO 'United_States.parquet' (FORMAT 'PARQUET')"

# Download transects by bounding box.
duckdb -c "COPY (SELECT * FROM 'az://coclico.blob.core.windows.net/gcts/release/2024-08-02/*.parquet' AS gcts WHERE bbox.xmin <= 14.58 AND bbox.ymin <= -22.77 AND bbox.xmax >= 14.27 AND bbox.ymax >= -23.57) TO area_of_interest.parquet (FORMAT 'PARQUET')"

# Or, download the data in bulk using AZ CLI
az storage blob download-batch \
    --destination "./" \
    --source "gcts" \
    --pattern "release/2024-08-02/*.parquet" \
    --account-name coclico

Usage

More extensive installation and usage instructions will come when we build the documentation. For now, to run the tutorials, analytics or scripts clone the repository, install the environment using a package manager like miniconda. You may use Jupyter lab to explore the interactive content of the notebooks.

git clone https://TUDelft-CITG/coastpy.git
cd coastpy
mamba env create -f environment.yml
jupyter lab

Citation:

@article{CALKOEN2025106257,
  title     = {Enabling coastal analytics at planetary scale},
  journal   = {Environmental Modelling & Software},
  volume    = {183},
  pages     = {106257},
  year      = {2025},
  issn      = {1364-8152},
  doi       = {https://doi.org/10.1016/j.envsoft.2024.106257},
  url       = {https://www.sciencedirect.com/science/article/pii/S1364815224003189},
}

Contributing

Interested in contributing? Check out the contributing guidelines. Please note that this project is released with a Code of Conduct. By contributing to this project, you agree to abide by its terms.

License

coastpy was created by Floris Calkoen. The software is licensed under the terms of the MIT license. Data licenses can be found in the respective STAC collection.

Credits

Initial template of coastpy was created with cookiecutter and the py-pkgs-cookiecutter template.