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Tips for Working with Quarto

Transcript

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Your Turn

  1. Working in your report.qmd file, right below the YAML, add a code chunk that loads the tidyverse and imports your penguins data to an object called penguins.

  2. Add a first-level heading with the text Results.

  3. Right below the Results heading, create a second code chunk and add some code that you used to make a graph in the data viz section of the course.

  4. Render your document and make sure it works!

Have any questions? Put them below and we will help you out!

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Brian Slattery

Brian Slattery

October 4, 2023

For the third tip, I wasn't sure if there was a way to source R script documents in a Quarto document? I tried googling this and it looked like there was a source() function that lets R script files reference other R script files, but it seemed like there were some limitations too. I wasn't sure how Quarto documents differed from R script documents in that way. Thanks!

Gracielle Higino

Gracielle Higino

October 4, 2023

Hey, Brian! For this tip you don't need to source - copy+paste is enough! - but you can do that for sure! It's a great thing to learn. I'm not aware of the limitations of sourcing, it has always worked fine for me, but I know you need to write your R script in a way that is independent (i.e., it must be able to run alone or it has a very clear chain of execution with other scripts). For rendering Quarto documents, you should add local = knitr::knit_global() as an argument of your source() function. For example, if I want to source an R script that creates an object that stores a plot called p, I could add this to my code chunk:

source("my_beautiful_plot.R", local = knitr::knit_global())    #sources the code that creates the object
p    # displays the object

Quarto is a way to render Pandoc Markdown markup language, which means it is a way to control structure, format and relationships in a document. R scripts are a "roadmap" of functions to execute that will only result in more data or plots. When we add a code chunk in a *.qmd file, we are adding a relationship between an R script and other elements of the document.

I hope that's helpful!