Field

A field has a name, a number of growing seasons and one or more shapes.

Growing season statuses

A growing season can have one of the following statuses

  • active a crop is currently growing
  • harvested the crop has been harvested
  • fallow no crop is planted in this period of time
  • archived the growing season is no longer relevant, but kept for administrative purposes

Benchmark

The benchmark is a measure for the performance of the data product of a field in a certain period as compared to similar fields. Here's how it is calculated:

  • collect the data product values of all fields in the current period
  • use only the fields with the same crop variety
  • use only the fields whose growing season starts in the same month as this field
  • take the average of the data product values

Benchmark colors

A field border can have any of these colors

  • red the field is performing 15% worse than the average field, according to the benchmark
  • yellow the field is performing about average (with a 15% margin), according to the benchmark
  • green the field is performing 15% better than the average field, according to the benchmark
  • blue insufficient data is available to due to clouds
  • grey no data available, or no coverage (crop variety) available to calculate the benchmark

Raster colors

The pixels (little squares) of a field raster image can be colored two ways:

The absolute scale uses a fixed minimum and maximum value that has been predefined for each data product.

The relative scale uses the lowest and highest value of the data product in the field at the selected period. So the values can be different even between two periods of the same field.

Geometries (Shapes)

The user interface currently supports only a single geometry for a field. The API, on the other hand, already supports multiple geometry. Each of them active in a different period of time.

Each geometry consists of one or more polygons. This way, the roads that cross the field can be excluded.

Multiple polygons

Accumulated data products

Accumulated data products (accumulated biomass, accumulated evapotranspiration) can only be calculated during the period of a growing season. The value at a given date is the sum of the values of the weeks since the start of the season.