ggformulaExtra

ggformulaExtra provides some addiitonal functionality to ggformula. Typically, this functionality either

• relies on additional packages beyond ggplot2, or

• is "experimental"

Installation

You can install ggformulaExtra from github with:

# install.packages("devtools")
devtools::install_github("ProjectMOSAIC/ggformulaExtra")

Example

This is a basic example that uses ggrepel to solve a common problem -- text labels that overlap.

library(ggformulaExtra)
#> Loading required package: ggformula
#> Loading required package: ggplot2
#> 
#> New to ggformula?  Try the tutorials: 
#>  learnr::run_tutorial("introduction", package = "ggformula")
#>  learnr::run_tutorial("refining", package = "ggformula")
theme_set(theme_bw())

mtcars$model <- rownames(mtcars)
mtcars$cylinders <- factor(mtcars$cyl)

p <-
  gf_point(mpg ~ wt, data = mtcars, color = ~ cylinders)

# Avoid overlaps by repelling text labels
p %>% gf_text_repel(label = ~ model)

# Labels with background
p %>% gf_label_repel(label = ~ model)

# Add aesthetic mappings
p %>% gf_text_repel(alpha = ~ wt, size = ~ mpg, label = ~ model)

p %>% gf_label_repel(label = ~ model,
                     fill = ~ factor(cyl), color = "white", segment.color = "black")

More examples can be found in the package documentation.