Demonstration of Michigan Colors for R Graphs

Author

Andrew Grogan-Kaylor

Published

July 13, 2022

1 Installation

You will need to install devtools if you have not already done so:

install.packages("devtools")

Then use devtools to install michigancolors.

devtools::install_github("agrogan1/michigancolors")

2 Usage

library(michigancolors)

3 Allowable Colors

Colors are drawn from https://brand.umich.edu/design-resources/colors/.

Allowable colors are: “blue”, “maize”, “tappan red”, “ross school orange”, “wave field green”, “taubman teal”, “arboretum blue”, “ann arbor amethyst”, “matthaei violet”, “umma tan”, “burton tower beige”, “angell hall ash”, and “law quad stone”

4 Help

help(michigancolors)

5 Examples

5.1 Base R

5.1.1 Entire Palette Of Colors

hist(iris$Petal.Length, col = michigancolors())

hist(iris$Petal.Length, 
     col = michigancolors(),
     main = "Petal Length of Iris Flowers",
     xlab = "Petal Length")

6 Specific Color

6.1 Base R

hist(iris$Petal.Length, col = michigancolors("matthaei violet"))

plot(iris$Petal.Length, 
     iris$Sepal.Length, 
     pch = 19,
     col = michigancolors("tappan red"))

6.2 ggplot2

library(ggplot2)

6.2.1 Entire Palette Of Colors

ggplot(iris, 
       aes(x = Petal.Length, 
           fill = Species)) + 
  geom_density(alpha = .5) + 
  labs(title = "Density Plot of Species in Iris Data Set") + 
  theme_minimal() + 
  scale_fill_manual(values = michigancolors())

ggplot(iris, 
       aes(x = Petal.Length, 
           y = Sepal.Length, 
           color = Species)) + 
  geom_point() + 
  geom_smooth() + 
  labs(title = "Scatterplot of Iris Data Set") + 
  theme_minimal() + 
  scale_color_manual(values = michigancolors())

6.2.2 Specific Colors

library(ggdist) # distribution plots

ggplot(iris,
       aes(x = Species,
           y = Petal.Length,
           fill = Species)) +
  geom_dots(dotsize = 3) +
  labs(title = "Petal Length by Iris Species") + 
  theme_minimal() + 
  scale_fill_manual(values = c(michigancolors("arboretum blue"),
                               michigancolors("ann arbor amethyst"),
                               michigancolors("matthaei violet")))