e {mapsRinteractive}

e

Description

Calculates the Nash-Sutcliffe modelling efficiency (E) from observed and predicted values.

Usage

e(observed, predicted)

Arguments

observed

Numeric vector of observed values

predicted

Numeric vector of predicted values. The length shall be the same as for observed.

Details

E = 1 - sum(observed - predicted)/sum(observed - mean (observed))

Value

The Nash-Sutcliffe modelling efficiency (E) calculated from observed and predicted values.

References

Nash, J. E., & Sutcliffe, J. V. (1970). River flow forecasting through conceptual models part I—A discussion of principles. Journal of hydrology, 10(3), 282-290.

Examples

o<-1:5
p<-c(2,2,4,3,5)
e(observed=o, predicted=p)