South American Field Boundaries

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llms.txt

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2.11 KB

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text/plain

Last Modified

21 Jul 2026

Source URL

https://data.source.coop/wri-data-lab/trazofields/eap-release/eap-trazo2/llms.txt

Cloud URI

s3://us-west-2.opendata.source.coop/wri-data-lab/trazofields/eap-release/eap-trazo2/llms.txt

# Trazo2 Field Boundaries — Early Adopters Program (2025)

> **Superseded — not the recommended data.** For current work use
> [`trazo3-fields`](../../trazo3-fields/). Part of the
> [EAP release](../llms.txt); see the [catalog root](../../catalog.json).

Field boundaries from the Trazo2 model, shared through the Early Adopters Program in late 2025. Trazo2 is the best evaluated and characterized model in the suite, trained on the full global Fields of The World dataset plus all 17 South American soy ecoregions with rebalanced class weights (0.75 / 0.05 / 0.20).

Most regions in the technical note's coverage table are Trazo2 outputs.

## Files (10)

- `argentina_chaco_2024`
- `argentina_cordoba_2024`
- `brazil_goias_2024`
- `brazil_mato_grosso_do_sul_2024`
- `brazil_para_2024`
- `brazil_piaui_2024`
- `brazil_sao_paulo_2024`
- `brazil_tocantins_2024`
- `paraguay_chaco_2024`
- `paraguay_non_chaco_2024`

## Schema

| Column | Meaning |
|---|---|
| `det_method` | detection method; constant `auto-imagery` |
| `id` | feature id within the file; not stable across models or releases |
| `area` | field area in **hectares** |
| `perimeter` | field perimeter in **metres** |
| `geometry` | MultiPolygon boundary, EPSG:4326 |

Narrower than the released data: no MapBiomas class (`mbmode24`) and no Hansen forest-loss
columns. All files in this collection share this schema, so they glob:

```sql
SELECT count(*) FROM read_parquet('eap-trazo2/*.parquet');
```

## Caveats

Superseded data from late 2025 — prefer [`trazo3-fields`](../../trazo3-fields/) for current
work. Boundaries are model-derived and have not been field-verified. Field counts are not
comparable across models: Trazo1 and Trazo2 fragment fields more finely than Trazo3, so they
report more boundaries over identical ground. Not intended to be used alone to support
deforestation- or conversion-free claims.

## References

- [Technical note (Grupp et al. 2026)](https://www.wri.org/research/field-boundaries-south-america)
- [EAP release overview](../llms.txt)
- [Model card](https://huggingface.co/worldresourcesinstitute/Trazo2)