CRS Sanity Check
When To Use
- Use before any overlay, buffer, distance, or area operation.
- Use when data comes from multiple providers or mixed formats.
- Use when coordinate metadata is missing or contradictory.
Workflow
- Inspect declared CRS for every input layer.
- Confirm axis order and unit assumptions.
- Identify a shared analysis CRS and justify it.
- Reproject inputs only once to the selected CRS.
- Validate extents and spot-check coordinates after reprojection.
Guardrails
- Do not compute distance or area in geographic degrees unless explicitly intended.
- Do not proceed when CRS metadata is absent without an explicit fallback strategy.
- Record original CRS and transformation choices in the final output notes.