EOPF-Sample-Service/eopf-sample-notebooks
Jul 2025 – Dec 2025
5 Months active
Languages Used
Jupyter NotebookPythonJSONMarkdown
Technical Skills
Cloud ComputingDaskData AccessData AnalysisData VisualizationEarth Observation
przell
PROFILE
Przell
Peter Zellner developed a suite of performance benchmarking and data processing notebooks for the EOPF-Sample-Service/eopf-sample-notebooks repository, focusing on Earth Observation data workflows with Sentinel-2. He implemented configurable benchmarking frameworks and parameter sweeps to compare data access methods such as EOPF, SAFE, Zarr, and CDSE, integrating OpenEO and STAC APIs for flexible geospatial analysis. Using Python, Jupyter Notebooks, and Dask, Peter enhanced reproducibility and maintainability through code linting, pre-commit hooks, and publication-ready formatting. His work improved data loading efficiency, observability, and onboarding, enabling data scientists to evaluate and optimize cloud-based geospatial workflows with robust, auditable methodologies.
Overall Statistics
Feature vs Bugs
92%Features
Repository Contributions
38Total
Bugs
1
Commits
38
Features
11
Lines of code
54,559
Activity Months5
Your Network
46 people
Work History
December 2025
4 Commits • 2 Features
Dec 1, 2025December 2025: Delivered performance benchmarking capabilities and code quality improvements for the EOPF notebooks in EOPF-Sample-Service/eopf-sample-notebooks. The work focused on benchmarking performance between EOPF zarr and SAFE formats with direct file reading, updating tutorial data paths for faster execution, and aligning data handling with publication-ready standards. In addition, notebook linting and formatting improvements were implemented to enhance readability and maintainability. Publication-ready cleanup and XCube compatibility fixes were applied to accelerate reproducibility and onboarding for external users. Overall, these efforts reduced time-to-insight for performance evaluation, improved maintainability, and strengthened reproducibility for data scientists and contributors.
4 Commits • 2 Features
Dec 1, 2025December 2025: Delivered performance benchmarking capabilities and code quality improvements for the EOPF notebooks in EOPF-Sample-Service/eopf-sample-notebooks. The work focused on benchmarking performance between EOPF zarr and SAFE formats with direct file reading, updating tutorial data paths for faster execution, and aligning data handling with publication-ready standards. In addition, notebook linting and formatting improvements were implemented to enhance readability and maintainability. Publication-ready cleanup and XCube compatibility fixes were applied to accelerate reproducibility and onboarding for external users. Overall, these efforts reduced time-to-insight for performance evaluation, improved maintainability, and strengthened reproducibility for data scientists and contributors.
December 2025
November 2025
3 Commits • 1 Features
Nov 1, 2025November 2025 focused on delivering performance benchmarking and monitoring enhancements for the Jupyter notebook workflow in EOPF-Sample-Service/eopf-sample-notebooks. The work increased observability, improved data loading efficiency, and set a foundation for ongoing performance optimization of notebook-backed data access and processing.
November 2025
3 Commits • 1 Features
Nov 1, 2025November 2025 focused on delivering performance benchmarking and monitoring enhancements for the Jupyter notebook workflow in EOPF-Sample-Service/eopf-sample-notebooks. The work increased observability, improved data loading efficiency, and set a foundation for ongoing performance optimization of notebook-backed data access and processing.
September 2025
13 Commits • 2 Features
Sep 1, 2025Monthly summary for 2025-09: Delivered core OpenEO + Sentinel-2 notebook capabilities with STAC API integration, enabling local data access, NDVI computation, and data-cube workflows, while stabilizing the notebook ecosystem through code-quality enhancements and packaging improvements. Launched preliminary OpenEO service exploration notebooks for Sentinel-2 and STAC to prototype integration, environment setup, and STAC item loading/visualization. Created webinar-oriented notebooks to support review and knowledge transfer, and strengthened the overall notebook pipeline with Black linting and pre-commit checks. Demonstrated business value by enabling faster prototyping of Sentinel-2 data workflows, improving reproducibility, and laying groundwork for production OpenEO service integration. Technologies/skills demonstrated include Python, OpenEO workflows, STAC API, NDVI/data-cube processing, environment setup, package management via pip, and code-quality tooling (Black, pre-commit).
13 Commits • 2 Features
Sep 1, 2025Monthly summary for 2025-09: Delivered core OpenEO + Sentinel-2 notebook capabilities with STAC API integration, enabling local data access, NDVI computation, and data-cube workflows, while stabilizing the notebook ecosystem through code-quality enhancements and packaging improvements. Launched preliminary OpenEO service exploration notebooks for Sentinel-2 and STAC to prototype integration, environment setup, and STAC item loading/visualization. Created webinar-oriented notebooks to support review and knowledge transfer, and strengthened the overall notebook pipeline with Black linting and pre-commit checks. Demonstrated business value by enabling faster prototyping of Sentinel-2 data workflows, improving reproducibility, and laying groundwork for production OpenEO service integration. Technologies/skills demonstrated include Python, OpenEO workflows, STAC API, NDVI/data-cube processing, environment setup, package management via pip, and code-quality tooling (Black, pre-commit).
September 2025
August 2025
14 Commits • 4 Features
Aug 1, 2025August 2025 monthly summary for EOPF-Sample-Service/eopf-sample-notebooks. Delivered a configurable performance benchmarking framework spanning data access methods (EOPF, SAFE, Zarr, CDSE) with parameter sweeps across bounding boxes, time ranges, spatial resolutions, and variable selections. Implemented OpenEO CDSE integration and Sentinel-2 L2A processing notebook to connect to CDSE, process B02, compute monthly mean, save TIFFs, and visualize results. Expanded STAC loading/testing with the EODC/openEO backend to validate data loading from STAC catalogs. Fixed band name casing handling in the STAC connector to resolve B02 vs b02 issues, improving compatibility and error handling. Launched introductory notebooks demonstrating end-to-end OpenEO/STAC/Zarr workflows with NDVI and monthly means, including SAFE comparisons for benchmarking.
August 2025
14 Commits • 4 Features
Aug 1, 2025August 2025 monthly summary for EOPF-Sample-Service/eopf-sample-notebooks. Delivered a configurable performance benchmarking framework spanning data access methods (EOPF, SAFE, Zarr, CDSE) with parameter sweeps across bounding boxes, time ranges, spatial resolutions, and variable selections. Implemented OpenEO CDSE integration and Sentinel-2 L2A processing notebook to connect to CDSE, process B02, compute monthly mean, save TIFFs, and visualize results. Expanded STAC loading/testing with the EODC/openEO backend to validate data loading from STAC catalogs. Fixed band name casing handling in the STAC connector to resolve B02 vs b02 issues, improving compatibility and error handling. Launched introductory notebooks demonstrating end-to-end OpenEO/STAC/Zarr workflows with NDVI and monthly means, including SAFE comparisons for benchmarking.
July 2025
4 Commits • 2 Features
Jul 1, 2025July 2025: Delivered a reproducible benchmarking notebook to compare Sentinel-2 L2A data access between xcube-cdse and xcube-eopf. Implemented end-to-end workflow including data-store setup for both libraries, area-of-interest calculations, and data retrieval paths. Added a benchmark configuration and load() steps to stabilize measurements. Cleaned up the repository by removing a deprecated Sentinel-2 L1C MSI Zarr exploration notebook to reduce confusion and maintenance overhead. These efforts enable data-driven library choices, faster performance investigations, and a cleaner, maintainable notebook suite.
4 Commits • 2 Features
Jul 1, 2025July 2025: Delivered a reproducible benchmarking notebook to compare Sentinel-2 L2A data access between xcube-cdse and xcube-eopf. Implemented end-to-end workflow including data-store setup for both libraries, area-of-interest calculations, and data retrieval paths. Added a benchmark configuration and load() steps to stabilize measurements. Cleaned up the repository by removing a deprecated Sentinel-2 L1C MSI Zarr exploration notebook to reduce confusion and maintenance overhead. These efforts enable data-driven library choices, faster performance investigations, and a cleaner, maintainable notebook suite.
July 2025
Activity
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Quality Metrics
Correctness77.4%
Maintainability79.0%
Architecture74.2%
Performance69.4%
AI Usage23.6%
Skills & Technologies
Programming Languages
JSONJupyter NotebookMarkdownPython
Technical Skills
API IntegrationAPI integrationCDSECloud ComputingCloud Data AccessCode FormattingCoordinate Reference Systems (CRS)DaskData AccessData AnalysisData CubeData EngineeringData ProcessingData ReprojectionData Science
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