getRegion
@svenvw/fdm-source / fdm-calculator/src / getRegion
Function: getRegion()
getRegion(
b_centroid):Promise<RegionKey>
Defined in: fdm-calculator/src/norms/nl/2025/stikstofgebruiksnorm.ts:83
Determines the specific soil region (e.g., "zand_nwc", "zand_zuid", "klei", "veen", "loess") for a given field based on its geographical coordinates. This is achieved by performing a spatial query against a vector file containing the boundaries of grondsoortenkaart in de Meststoffenwet in the Netherlands.
Parameters
b_centroid
Field
An array containing the longitude and latitude of the field's centroid.
This point is used to query the geographical data.
Returns
Promise<RegionKey>
A promise that resolves to a RegionKey (e.g., "zand_nwc", "zand_zuid", "klei", "veen", "loess") if the
field's centroid is found within a defined soil region.
Throws
If there are issues fetching the file, processing its stream, or if the field's coordinates do not fall within any known region.
Remarks
This function is critical for applying region-specific nitrogen norms, as these norms vary based on soil type.