Skip to contents

Extract Model Matrix from GKw Regression Model

Source: R/gkwreg-other-methods.R
model.matrix.gkwreg.Rd

Extracts the model matrix (design matrix) from a fitted Generalized Kumaraswamy regression model object.

Usage

# S3 method for class 'gkwreg'
model.matrix(object, ...)

Arguments

object

An object of class "gkwreg".

...

Currently not used.

Value

A design matrix.

See also

gkwreg, model.frame.gkwreg

Author

Lopes, J. E.

Examples

# \donttest{
data(GasolineYield)
fit <- gkwreg(yield ~ batch + temp, data = GasolineYield, family = "kw")
#> Warning: NaNs produced
head(model.matrix(fit))
#>   (Intercept) batch1 batch2 batch3 batch4 batch5 batch6 batch7 batch8 batch9
#> 1           1      1      0      0      0      0      0      0      0      0
#> 2           1      1      0      0      0      0      0      0      0      0
#> 3           1      1      0      0      0      0      0      0      0      0
#> 4           1      1      0      0      0      0      0      0      0      0
#> 5           1      0      1      0      0      0      0      0      0      0
#> 6           1      0      1      0      0      0      0      0      0      0
#>   temp
#> 1  205
#> 2  275
#> 3  345
#> 4  407
#> 5  218
#> 6  273
# }