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Source Cooperative is a Radiant Earth project

FTW Benchmark Data (2.0-alpha) · Fields of The World · Source Cooperative | Source Cooperative

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Austria

Name: FTW Benchmark Data (2.0-alpha)
Creator: Fields of The World

Overview

Benchmark chips for Austria cut from the harmonized field boundary collection for Austria (edition 2025).

It contains 11,242 chips and 656,619 field polygons. Chips are pre-assigned to benchmark splits (train 9,018, val 1,153, test 1,071).

Licensed CC-BY-4.0.

Accessing the data

The collection ships these files alongside collection.json:

file	what it is
`at_fields.parquet`	Field boundary polygons
`at_fields_filtered.parquet`	Field polygons after the class filter
`at_boundary_lines.parquet`	Field boundary lines
`at_chips.parquet`	Chip definitions with field coverage
`items.parquet`	STAC items in GeoParquet format (collection mirror)

Query them with DuckDB from inside the collection directory, so the relative paths below resolve:

Schema & field notes

Columns in the chips table:

gzd: MGRS grid zone designator of the chip's grid cell
mgrs_10km: MGRS 100 km square plus 10 km cell identifier the chip belongs to
id: chip identifier; matches the STAC item id (with the year suffix stripped)
field_coverage_pct: percent of the chip's area covered by mapped field polygons
hcat_dominant_code: EuroCrops HCAT code of the crop covering most of the chip's fields
hcat_dominant_name_en: English name for hcat_dominant_code
hcat_dominant_pct: share of the chip's field area under the dominant crop
hcat_top: the crops covering the chip's field area, as {code, name_en, pct} entries ordered by share (top 5)
split: which benchmark split the chip belongs to (train / val / test)
geometry: the chip footprint, a square polygon in EPSG:4326
bbox: bounding box of the chip footprint

FTW properties on each STAC item:

ftw:calendar_year: calendar year of the crop cycle the chip documents
ftw:field_coverage_pct: percent of the chip's area covered by mapped field polygons
ftw:hcat_dominant_code: EuroCrops HCAT code of the crop covering most of the chip's fields
ftw:hcat_dominant_name_en: English name for hcat_dominant_code
ftw:hcat_dominant_pct: share of the chip's field area under the dominant crop
ftw:hcat_top: the crops covering the chip's field area, as {code, name_en, pct} entries ordered by share (top 5)
ftw:split: which benchmark split the chip belongs to (train / val / test)

Label rasters available as item assets: instance_mask, semantic_2class_mask, semantic_3class_mask.

Data quality & usage notes

Field coverage is uneven: the median chip is 18.2% mapped field while the bottom 5% sit at or below 0.1%. Filter on field_coverage_pct when sparse chips would skew an evaluation.
Masks are derived from boundaries declared for one year; later parcel changes are not reflected.
Empty area inside a chip means unmapped, not necessarily fieldless.
Chips on the dataset border may be only partly covered by the source boundaries.
Respect the pre-assigned splits: they are spatially blocked, so resampling chips at random leaks information between train and test.

Example queries

Every query below was run against this collection when this file was written; the -- result: lines are its first rows. Run them from the collection directory.

Chips per split

Chips with the highest field coverage

Dominant crops across chips

Field polygons intersecting one chip

The field boundaries here come from Source field boundary collection; consult it for the original attributes, licensing terms and update cadence.

Austria

Overview

Benchmark chips for Austria cut from the harmonized field boundary collection for Austria (edition 2025).

It contains 11,242 chips and 656,619 field polygons. Chips are pre-assigned to benchmark splits (train 9,018, val 1,153, test 1,071).

Licensed CC-BY-4.0.

Accessing the data

The collection ships these files alongside collection.json:

file	what it is
`at_fields.parquet`	Field boundary polygons
`at_fields_filtered.parquet`	Field polygons after the class filter
`at_boundary_lines.parquet`	Field boundary lines
`at_chips.parquet`	Chip definitions with field coverage
`items.parquet`	STAC items in GeoParquet format (collection mirror)

Query them with DuckDB from inside the collection directory, so the relative paths below resolve:

Schema & field notes

Columns in the chips table:

gzd: MGRS grid zone designator of the chip's grid cell
mgrs_10km: MGRS 100 km square plus 10 km cell identifier the chip belongs to
id: chip identifier; matches the STAC item id (with the year suffix stripped)
field_coverage_pct: percent of the chip's area covered by mapped field polygons
hcat_dominant_code: EuroCrops HCAT code of the crop covering most of the chip's fields
hcat_dominant_name_en: English name for hcat_dominant_code
hcat_dominant_pct: share of the chip's field area under the dominant crop
hcat_top: the crops covering the chip's field area, as {code, name_en, pct} entries ordered by share (top 5)
split: which benchmark split the chip belongs to (train / val / test)
geometry: the chip footprint, a square polygon in EPSG:4326
bbox: bounding box of the chip footprint

FTW properties on each STAC item:

ftw:calendar_year: calendar year of the crop cycle the chip documents
ftw:field_coverage_pct: percent of the chip's area covered by mapped field polygons
ftw:hcat_dominant_code: EuroCrops HCAT code of the crop covering most of the chip's fields
ftw:hcat_dominant_name_en: English name for hcat_dominant_code
ftw:hcat_dominant_pct: share of the chip's field area under the dominant crop
ftw:hcat_top: the crops covering the chip's field area, as {code, name_en, pct} entries ordered by share (top 5)
ftw:split: which benchmark split the chip belongs to (train / val / test)

Label rasters available as item assets: instance_mask, semantic_2class_mask, semantic_3class_mask.

Data quality & usage notes

Field coverage is uneven: the median chip is 18.2% mapped field while the bottom 5% sit at or below 0.1%. Filter on field_coverage_pct when sparse chips would skew an evaluation.
Masks are derived from boundaries declared for one year; later parcel changes are not reflected.
Empty area inside a chip means unmapped, not necessarily fieldless.
Chips on the dataset border may be only partly covered by the source boundaries.
Respect the pre-assigned splits: they are spatially blocked, so resampling chips at random leaks information between train and test.

Example queries

Every query below was run against this collection when this file was written; the -- result: lines are its first rows. Run them from the collection directory.

Chips per split

Chips with the highest field coverage

Dominant crops across chips

Field polygons intersecting one chip

The field boundaries here come from Source field boundary collection; consult it for the original attributes, licensing terms and update cadence.

1INSTALL spatial; LOAD spatial;
2SELECT * FROM read_parquet('items.parquet') LIMIT 5;

1INSTALL spatial; LOAD spatial;
2SELECT * FROM read_parquet('items.parquet') LIMIT 5;

1SELECT "ftw:split" AS split, count(*) AS chips FROM read_parquet('items.parquet') GROUP BY 1 ORDER BY 1;
2-- result: test | 1071
3-- result: train | 9018
4-- result: val | 1153

1SELECT "ftw:split" AS split, count(*) AS chips FROM read_parquet('items.parquet') GROUP BY 1 ORDER BY 1;
2-- result: test | 1071
3-- result: train | 9018
4-- result: val | 1153

1SELECT id, field_coverage_pct FROM read_parquet('at_chips.parquet') ORDER BY field_coverage_pct DESC LIMIT 5;
2-- result: ftw-33UWP7662 | 96.65
3-- result: ftw-33UXP5818 | 96.32
4-- result: ftw-33UWP7664 | 95.93
5-- result: ... 2 more rows

1SELECT id, field_coverage_pct FROM read_parquet('at_chips.parquet') ORDER BY field_coverage_pct DESC LIMIT 5;
2-- result: ftw-33UWP7662 | 96.65
3-- result: ftw-33UXP5818 | 96.32
4-- result: ftw-33UWP7664 | 95.93
5-- result: ... 2 more rows

1SELECT hcat_dominant_name_en AS crop, count(*) AS chips FROM read_parquet('at_chips.parquet') WHERE hcat_dominant_code IS NOT NULL GROUP BY 1 ORDER BY 2 DESC LIMIT 10;
2-- result: WINTER SOFT WHEAT | 2440
3-- result: SILO CORN | 2088
4-- result: GRAIN CORN | 1559
5-- result: ... 7 more rows

1SELECT hcat_dominant_name_en AS crop, count(*) AS chips FROM read_parquet('at_chips.parquet') WHERE hcat_dominant_code IS NOT NULL GROUP BY 1 ORDER BY 2 DESC LIMIT 10;
2-- result: WINTER SOFT WHEAT | 2440
3-- result: SILO CORN | 2088
4-- result: GRAIN CORN | 1559
5-- result: ... 7 more rows

1SELECT count(*) AS fields FROM read_parquet('at_fields.parquet') f, (SELECT geometry FROM read_parquet('at_chips.parquet') LIMIT 1) c WHERE ST_Intersects(f.geometry, c.geometry);
2-- result: 74

1SELECT count(*) AS fields FROM read_parquet('at_fields.parquet') f, (SELECT geometry FROM read_parquet('at_chips.parquet') LIMIT 1) c WHERE ST_Intersects(f.geometry, c.geometry);
2-- result: 74

FTW Benchmark Data (2.0-alpha)

FTW Benchmark Data (2.0-alpha)

Austria

Overview

Accessing the data

Schema & field notes

Data quality & usage notes

Example queries

Chips per split

Chips with the highest field coverage

Dominant crops across chips

Field polygons intersecting one chip

Related collections

Austria

Overview

Accessing the data

Schema & field notes

Data quality & usage notes

Example queries

Chips per split

Chips with the highest field coverage

Dominant crops across chips

Field polygons intersecting one chip

Related collections