Color Palette

A set of functions to display the available color palettes (see plotCols) and to load a color palette into your global environment (see getCols).

Load Functions into Global Environment

  
source("https://lauralogozzo.github.io/assets/myCols.R.txt")
  

Documentation

Function to display the available color palettes, and their names:

  
plotCols(
  group = ""
)
  

group

"categorical" or "ramp" specifies the available color palettes in that type to display. Defaults to "", which displays both types of color palettes.

Function to pull the desired color palette by name:

  
getCols(
  x = NULL
  num = length(eval(parse(text=x)))
)
  

x	The color palette name to pull. See plotCols() for available palettes.
num	The number of colors to pull from the desired palette. Defaults to the entire palette.

Examples

An example of a palette for categorical data in ggplot:

  
# Load ggplot
library('ggplot2')

# Creates a global environment object named 'myCols' that contains the chosen palette
myCols <- getCols("nausicaa")

# Get iris data
data(iris)

# Ggplot example
ggplot(data=iris, aes(Petal.Length,Sepal.Length, color = Species)) +
  geom_point(size = 2)+
  scale_color_manual(values = myCols) +
  theme_classic()

  

An example of a gradient palette for continuous data in ggplot:

  
# Load ggplot
library('ggplot2')

# Get color palette
myCols <- getCols("sunset")

# Plot continuous scale
ggplot(data=iris, aes(Petal.Length,Sepal.Length, color = Petal.Width)) +
  geom_point(size = 2) +
  scale_color_gradientn(colors = rev(myCols)) +
  theme_classic()