BAT (version 2.9.6)

r2: Model R2.

Description

Calculates R2 from the summed squared differences between observed and estimated values.

Usage

r2(obs, est = NULL, param = 0)

Value

The r2 value.

Arguments

obs

Either a model or a vector with observed values.

est

A vector with estimated values. Only used if obs is not a model.

param

Number of parameters in the model to calculate the adjusted R2 if > 0. If obs is a model param will be ignored and the number of parameters will be calculated from the model.

Details

Useful for models or functions that do not provide r2 values.

Examples

obs = c(1,4,5,6)
est = c(0,1,4,7)

#example using values
r2(obs, est)
r2(obs, est, param = 1)

#example using model
mod = lm(obs ~ est)
r2(mod)
summary(mod)$r.squared
r2(mod, param = 1)
summary(mod)$adj.r.squared