PRESS function

Prediction fits

Various summaries of predictions and PRESS residuals.

R2pred(object = NULL)
RMSEP(object)
rmsep(object)
PRESS(object = NULL)
PRESS.res(object = NULL, ncomp = NULL)
PRESS.pred(object = NULL, ncomp = NULL)

Arguments

• object: a fitted model of type lm or mvr.
• ncomp: number of components to use with mvr (optional).

Details

Predictions are extracted and summaries/residuals are computed.

Returns

Returns either an object of summaries or residuals.

Author(s)

Kristian Hovde Liland

Examples

data <- data.frame(y = rnorm(8),
                                   x = factor(c('a','a','a','a','b','b','b','b')),
                                   z = factor(c('a','a','b','b','a','a','b','b')))
mod <- lm(y ~ x + z, data=data)
RMSEP(mod)
rmsep(mod) # Alias to distinguish it from pls::RMSEP
R2pred(mod)
PRESS(mod)
PRESS.res(mod)
PRESS.pred(mod)