Zheng, , T. . Colors in R . http://www.stat.columbia.edu/~tzheng/files/Rcolor.pdf .

A handy list of named colors in R

Wickham, H., Change, W., Henry, L., Pederson, T.L., Takahashi, K., Wilke, C.…Yutani, H. . ggplot2 . https://ggplot2.tidyverse.org .

The ggplot2 home page.

Software Carpentry Foundation. (2016) . Programming with R . https://swcarpentry.github.io/r-novice-inflammation/ .

A useful tutorial on programming in R.

Kabacoff, R.I. (2017) . Quick R . https://www.statmethods.net/index.html .

A very helpful reference or R analysis and visualizations.

The R Foundation . The R Project for Statistical Computing . https://swcarpentry.github.io/r-novice-inflammation/ .

The home page for the R statistical package.

R Studio Inc . R Studio . https://rstudio.com/ .

The home page for R Studio.