Description Usage Format Details Source
A sp::SpatialPointsDataFrame()
dataset containing the results
of applying demand_nutrient()
on soils
dataset to get
NPK fertilization plans.
1 |
A soil sample points data.table
with 20 sample points (rows)
and 6 features(columns):
id: a simple id for each soil sample point
X: longitude coordinate in WGS84 Pseudo-Mercator Coordinate Reference System
Y: latitude coordinate in WGS84 Pseudo-Mercator Coordinate Reference System
nitrogen: estimate of nitrogen demand in kg/ha
phosphorus: estimate of phosphorus (P_2O) demand in kg/ha
potassium: estimate of potassium (K_2O_5) demand in kg/ha
Each soil sample point is spatially located in WGS84 Pseudo-Mercator coordinates
(epsg:3857, unit: metres) and uniquely identified through a numeric id
.
https://www.journals.elsevier.com/european-journal-of-agronomy
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