Writing Academic Articles using R Sweave and LaTeX
This article is originally published at https://lucidmanager.org
One of my favourite activities in R is using Markdown to create business reports. Most of my work I export to MS Word to communicate analytical results with my colleagues. For my academic work and eBooks, I prefer LaTeX to produce great typography. This article explains how to write academic articles and essays combining R Sweave and LaTeX. The article is formatted in accordance with the APA (American Psychological Association) requirements.
To illustrate the principles of using R Sweave and LaTeX, I recycled an essay about problems with body image that I wrote for a psychology course many years ago. You can find the completed paper and all necessary files on my GitHub repository.
In an other post I have outlined how to achieve the same result using Emacs and Org Mode to write acedemic articles.
Body Image
Body image describes the way we feel about the shape of our body. The literature on this topic demonstrates that many people, especially young women, struggle with their body image. A negative body image has been strongly associated with eating disorders. Psychologists measure body image using a special scale, shown in the image below.
My paper measures the current and ideal body shape of the subject and the body shape of the most attractive other sex. The results confirm previous research which found that body dissatisfaction for females is significantly higher than for men. The research also found a mild positive correlation between age and ideal body shape for women and between age and the female body shape found most attractive by men. You can read the full paper on my personal website.
R Sweave and LaTeX
The R file for this essay uses the Sweave package to integrate R code with LaTeX. The first two code chunks create a table to summarise the respondents using the xtable package. This package creates LaTeX or HTML tables from data generated by R code.
The first lines of the code read and prepare the data, while the second set of lines creates a table in LaTeX code. The code chunk uses results=tex to ensure the output is interpreted as LaTeX. This approach is used in most of the other chunks. The image is created within the document and saved as a pdf file and back integrated into the document as an image with appropriate label and caption.
View the Rnw file on my GitHub repository to see the full code.
Configuration
I created this file in R Studio, using the Sweave and knitr functionality. To knit the R Sweave file for this paper you will need to install the apa6 and ccicons packages in your LaTeX distribution. The apa6 package provides macros to format papers in accordance with the requirements American Psychological Association.
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