Create README.md
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README.md
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---
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pretty_name: Hungary Crop Fields (GeoParquet, EUCROPMAP 2022)
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tags:
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- geospatial
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- agriculture
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- crop-mapping
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- polygons
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- geojson
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- geoparquet
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- earth-engine
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task_categories:
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- geospatial-aggregation
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- geospatial-indexing
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license: other # Derived from JRC EUCROPMAP; see "Licensing" below
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language:
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- en
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---
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# Hungary Crop Fields (GeoParquet, EUCROPMAP 2022)
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## Dataset Summary
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Vector polygons of crop **fields in Hungary** derived from **EUCROPMAP 2022** and packaged as a compact **GeoParquet**.
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Each feature has a stable `field_id`, crop `field_type` (sunflower or rapeseed), the ADM1 `region` (ASCII slug), and the polygon geometry in **EPSG:4326**. Convenience bounding-box columns (`minx`, `miny`, `maxx`, `maxy`) are included to enable fast spatial indexing without loading full geometries.
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**What this is:** geometry for fields (one record per field).
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**What this is not:** time series. Pair it with your raster-to-point or gridded time-series (e.g., ERA5-Land, Sentinel-2 aggregates) and assign per-date features to fields via a spatial join.
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---
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## Contents
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- **Country:** Hungary
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- **Source:** JRC/D5/EUCROPMAP/V1 (layer: `EU27_2022`)
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- **Year (polygons):** `2022` (`poly_year = 2022`)
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- **Scale:** 10 m (EUCROPMAP native resolution)
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- **Crops:** `sunflower` (code 231), `rapeseed` (code 232)
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- **Minimum field size kept:** `>= 0.05 ha` (500 m²)
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- **Regions (ADM1):**
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`["Bacs-kiskun","Baranya","Bekes","Borsod-abauj-zemplen","Budapest","Csongrad","Fejer","Gyor-moson-sopron","Hajdu-bihar","Heves","Jasz-nagykun-szolnok","Komarom-esztergom","Nograd","Pest","Somogy","Szabolcs-szatmar-bereg","Tolna","Vas","Veszprem","Zala"]`
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**File(s)**
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- `hungary_fields.parquet` — GeoParquet with (WKB) geometry in EPSG:4326 and bbox columns.
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---
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## Schema
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| column | type | description |
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|-------------|----------|--------------------------------------------------------------------------------------------|
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| `field_id` | string | Stable per-feature id |
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| `poly_year` | int | Polygon vintage (always `2022`). |
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| `field_type`| string | Crop type: `sunflower` or `rapeseed`. |
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| `region` | string | ADM1 ASCII slug (e.g., `Bacs-kiskun`). |
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| `geometry` | geometry | Polygon in EPSG:4326 (WKB inside Parquet). |
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| `minx` | float | Bounding box min longitude. |
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| `miny` | float | Bounding box min latitude. |
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| `maxx` | float | Bounding box max longitude. |
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| `maxy` | float | Bounding box max latitude. |
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---
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