Visualizing Models with plotModel()

Ben Baumer and Randall Pruim

2017-07-25

For now this is just a dump of a bunch of plots. It needs to be turned into a vignette.

lattice

mod <- lm( mpg ~ factor(cyl), data = mtcars)
plotModel(mod)

# SLR
mod <- lm( mpg ~ wt, data = mtcars)
plotModel(mod, pch = 19)

# parallel slopes
mod <- lm( mpg ~ wt + factor(cyl), data=mtcars)
plotModel(mod)

# multiple categorical vars
mod <- lm( mpg ~ wt + factor(cyl) + factor(vs) + factor(am), data = mtcars)
plotModel(mod)

plotModel(mod, mpg = ~am)

# interaction
mod <- lm( mpg ~ wt + factor(cyl) + wt:factor(cyl), data = mtcars)
plotModel(mod)

# polynomial terms
mod <- lm( mpg ~ wt + I(wt^2), data = mtcars)
plotModel(mod)

# polynomial terms and covariate
mod <- lm( mpg ~ wt + I(wt^2) * factor(cyl), data = mtcars)
plotModel(mod)

plotModel(mod, formula = mpg ~ wt | cyl)

# GLM
mod <- glm(vs ~ wt, data=mtcars, family = 'binomial')
plotModel(mod)

# GLM with interaction
mod <- glm(vs ~ wt + factor(cyl), data=mtcars, family = 'binomial')
plotModel(mod, jitter.y = TRUE)

# GLM adjusted for factor response

mod <- glm( sex ~ width, data = KidsFeet, family = binomial())
plotModel(mod, jitter.y = TRUE)

# facets
mod <- lm(mpg ~ poly(wt,2) + factor(cyl) * factor(am), data=mtcars)
plotModel(mod, mpg ~ wt | factor(cyl))

ggplot2

knitr::opts_chunk$set(eval = FALSE)
mod <- lm( mpg ~ factor(cyl), data = mtcars)
plotModel(mod, system="g")

# SLR
mod <- lm( mpg ~ wt, data = mtcars)
plotModel(mod, system="g")

# parallel slopes
mod <- lm( mpg ~ wt + factor(cyl), data=mtcars)
plotModel(mod, system = "g")

# multiple categorical vars
mod <- lm( mpg ~ wt + factor(cyl) + factor(vs) + factor(am), data = mtcars)
plotModel(mod, system="g")
plotModel(mod, mpg ~ am, system="g")

# interaction
mod <- lm( mpg ~ wt + factor(cyl) + wt:factor(cyl) + factor(am), data = mtcars)
plotModel(mod, system="g")
plotModel(mod, system="g") + facet_grid( . ~ cyl)

# polynomial terms
mod <- lm( mpg ~ wt + I(wt^2), data = mtcars)
plotModel(mod, system="g")

# GLM
mod <- glm(vs ~ wt, data=mtcars, family = 'binomial')
plotModel(mod, system="g")

# GLM with interaction
mod <- glm(vs ~ wt + factor(cyl), data=mtcars, family = 'binomial')
plotModel(mod, system="g")
plotModel(mod, system="g") + facet_grid(. ~ cyl)