Welcome to FaultLine Discussions!

[chrislyonsKY]

FaultLine is an open-source project focused on spatial change detection and validation for modern geospatial datasets, particularly those used in cloud-native geospatial workflows.

This section exists to facilitate conversation around the project outside of formal issues and pull requests.

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What FaultLine Is

FaultLine aims to provide a toolchain for identifying and analyzing changes between spatial datasets, similar to how version control systems track differences between files.

The project focuses on datasets such as:

• GeoParquet
• Cloud Optimized GeoTIFF (COG)
• PMTiles
• STAC-based datasets

The goal is to create reproducible workflows for detecting:

• added features
• removed features
• modified geometries
• topology changes
• metadata differences
• cloud-optimization issues

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Purpose of Discussions

Use discussions for topics that are exploratory or collaborative rather than actionable bugs.

Examples include:

• ideas for new features
• architectural questions
• implementation approaches
• cloud-native geospatial workflows
• integration with GIS software
• performance considerations
• ecosystem compatibility

Discussions are also a place to explore:

• dataset diff algorithms
• spatial validation rules
• geospatial data engineering practices
• interoperability with open geospatial formats

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When to Use Issues Instead

Please open an Issue instead of a discussion if you are reporting:

• bugs
• reproducible errors
• documentation problems
• specific implementation tasks

Issues are used for tracked work, while discussions are intended for conversation and exploration.

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Suggested Discussion Topics

Some topics that would be especially helpful early in the project:

• Spatial dataset diff algorithms
• Efficient geometry comparison strategies
• Change manifests for geospatial datasets
• Cloud optimization validation rules
• Integration with existing tools (GDAL, DuckDB, etc.)
• Support for emerging formats in the cloud-native geospatial ecosystem

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Project Status

FaultLine is currently in early development, and architectural ideas are still evolving.

Early feedback and discussion are valuable and appreciated.

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Getting Involved

If you're interested in contributing:

• Share ideas
• Ask questions
• Suggest improvements
• Discuss implementation strategies

Community discussion helps shape the direction of the project.

Thanks for participating.
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