This book (https://smin95.com/dataviz) guides the reader to be familiar with R, a programming language, for data visualization. It also introduces the R package smplot2, which aims to make the process of data visualization simple. This book was created entirely using RMarkdown for reproducibility.

The old website (on smplot) can be accessed using this link (https://smin95.com/dataviz0).


Here is the only (and slightly outdated) reference about the package.

Seung Hyun Min, Jiawei Zhou. smplot: An R Package for Easy and Elegant Data Visualization (2021). Frontiers in Genetics, 12:802894. pdf

The codes of the figures in the report are here but these depend on smplot, not smplot2. In near future, I plan to submit smplot2 to CRAN and post its vignette here.

Installation of smplot2


devtools::install_github('smin95/smplot2', force = TRUE)

Issues and contact

If you spot any mistakes in this online book, please pull-request on Github or email me . If you find issues with the smplot2 package, please pull-request on Github.


smplot2 is under the MIT license. This tutorial is licensed under a Creative Commons Attribution 4.0 International License. I am the sole creator of smplot2.

About the author

I am Assistant Professor in Dept. Ophthalmology and Optometry at Wenzhou Medical University. On June 2021, I received my PhD at McGill University under the supervision of Dr. Robert F. Hess. My research is focused on amblyopia, neural plasticity and binocular vision. During spare time, I play the clarinet and develop R packages. More details, such as my publications, are on my website: https://www.smin95.com.