Calculates the Agreement coefficient (AC) from observed and
predicted values.
Usage
ac(o, p)
Arguments
o
A numeric vector. Observed values.
p
A numeric vector. Predicted values.
Value
Agreement coefficient (AC).
Details
Interpretation: larger is better.
References
Piikki K., Wetterlind J., Soderstrom M., Stenberg B. (2021). Perspectives
on validation in digital soil mapping of continuous attributes. A review.
Soil Use and Management. 10.1111/sum.12694
Willmott, C. J. (1984). On the evaluation of model performance in
physical geography. In Spatial statistics and models. Springer, Dordrecht,
Netherlands.