AR1/docs/analysis-tools/erase.md

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# Erase Analysis
Remove portions of features from an input dataset that overlap with an erase dataset.
## Overview
Erase analysis removes portions of input features that overlap with erase features, creating new geometries.
## Inputs
- **Input Dataset**: Dataset to erase from
- **Erase Dataset**: Dataset to erase with
## Outputs
New dataset containing:
- Features with erased portions removed
- Remaining geometry after erase
- Original attributes preserved
## Example
```json
{
"input_dataset_id": 123,
"erase_dataset_id": 124
}
```
## Background Jobs
This analysis runs as a background job. See [Erase Analysis Worker](../workers/erase_analysis.md) for details.
## Use Cases
- Exclusion zone mapping
- Feature subtraction
- Boundary modification
- Area calculations
## Notes
- Overlapping portions are removed
- Non-overlapping features preserved
- Complex geometries may slow processing
- Results depend on overlap extent
## Related Documentation
- [Erase Analysis Worker](../workers/erase_analysis.md)
- [Analysis API](../api/analysis.md)