Examples for 'broom::glance.ridgelm'

### ** Examples


# feel free to ignore the following line—it allows {broom} to supply 
# examples without requiring the model-supplying package to be installed.
if (requireNamespace("MASS", quietly = TRUE)) {

# load libraries for models and data
library(MASS)

names(longley)[1] <- "y"

# fit model and summarizd results
fit1 <- lm.ridge(y ~ ., longley)
tidy(fit1)

fit2 <- lm.ridge(y ~ ., longley, lambda = seq(0.001, .05, .001))
td2 <- tidy(fit2)
g2 <- glance(fit2)

# coefficient plot
library(ggplot2)
ggplot(td2, aes(lambda, estimate, color = term)) +
  geom_line()

# GCV plot
ggplot(td2, aes(lambda, GCV)) +
  geom_line()

# add line for the GCV minimizing estimate
ggplot(td2, aes(lambda, GCV)) +
  geom_line() +
  geom_vline(xintercept = g2$lambdaGCV, col = "red", lty = 2)

}