AXISDATUM / MAP

Explore real-world data.

Select the datasets you want to inspect in this view.

AgricultureUSDA crop history VesselsAIS observations & tracks AircraftADS-B observations

Transport & map controls

Tracks

VESSEL ACTIVITY

Observed AIS signals, not a complete vessel census.

Browse vessels in view

Vessel colors

Selected vessel's observed track

Color indicates reported vessel type, not cargo. Faded icons indicate older positions; gaps stay disconnected.

Agriculture settings Filters & data notes

Select a region, crop and year. Click a field to inspect its history.

Explore a regionCrop / land cover

Crop color opacity 80%

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Real places

Understand the data

Whole-field selection uses USDA CSB 2015–2022 across the contiguous 48 states. These are inferred crop boundaries, not ownership parcels, and stay fixed when you change the crop year. CDL is satellite-classified land cover, not farm declarations or official acreage statistics.

Contiguous 48 states: full coverage since 2008; selected states only in 1997–2007. Hawaii: since 2023. Alaska: not covered by this source.

Native resolution is 10 m from 2024 and 30 m for 2008–2023 in the contiguous U.S. Consider resolution and classification changes when comparing years.

These are currently available historical releases, not snapshots of what was known at the time. They do not, by themselves, prevent look-ahead bias in backtests.

Official data is loaded on demand and cached locally for up to 7 days. Unvisited tiles require a connection; the cache is not a complete national download.

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USDA CDL—

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Crop year

Before 2008 (partial coverage)

This land through time

Annual raster classifications at this point

Existing track