Raukr 2024 • Workshop Website

NBIS Summer School • Advanced R for Bioinformatics

Environment

To edit, preview and render documents, you need one or more of the following requirements:

You must use Quarto>=1.4.5
If using RStudio, use v2023.12.0 or newer
VSCode is a good alternative to RStudio for quarto documents
You need to install the R packages necessary for your topic/document

⚠️ Be wary of using the visual editor! It may mess up the code formatting.

Adding/Modifying topics

Fork the repository and clone locally and create a branch
Keep the topic name simple, preferably one word
To add a topic, create
- slides/topic/index.qmd
- labs/topic/index.qmd
- The YAML metadata should minimally look like this:
```
---
title: "Topic"
author: "Author"
description: "This topic covers this and that."
format: html
---
```
format must be html for reports and revealjs for presentations
For assets relating to the document (figures, files etc), create an assets folder
- slides/topic/assets/
- labs/topic/assets/

💡 The document can be live previewed to view changes. Preview is automatically updated on saving the document. Sometimes, the preview can look a bit wonky, in which case, cancel and rerun.

To preview, run in terminal
- quarto preview slides/topic/index.qmd
- quarto preview
- Saving the file updates the preview

To preview from inside docker: quarto preview labs/topic/index.qmd --host 0.0.0.0 --port 4200 --no-browser

💡 The document is rendered to the specified output format in the output directory.

To render, run in terminal
- quarto render slides/topic/index.qmd
- quarto render labs/topic/index.qmd
- Rendered files are written to /docs
- To view in browser, open
  - docs/slides/topic/index.html
  - docs/labs/topic/index.html

⚠️ Do not run quarto render as it will remove everything from docs/ and attempt to render all the files. This might overwrite someone else's materials and also break since you won't have their R packages installed. So, only render your files.

Finally commit changes (both source files and rendered files)

git stage .
git commit -m "Added topic"

Push changes to your fork and send a pull request

Docker

A docker container is available for rendering quarto documents and to run RStudio server.

⚠️ ~11GB

docker pull --platform=linux/amd64 ghcr.io/nbisweden/workshop-raukr:latest

Render qmd

For non-interactive use

# run in the cloned repo
docker run --platform=linux/amd64 --rm -u 1000:1000 -v ${PWD}:/home/rstudio/raukr ghcr.io/nbisweden/workshop-raukr:latest quarto render index.qmd

Run RStudio server

To develop or interactively work with notebooks

# run in the cloned repo
docker run --platform=linux/amd64 -e PASSWORD=raukr -p 8787:8787  -p 4200:4200 -v ${PWD}:/home/rstudio/raukr ghcr.io/nbisweden/workshop-raukr:latest

In browser, go to http://localhost:8787/. Use following credentials:

username: rstudio
password: raukr

On adding new packages, see below.

Updating docker

If new packages are added/required, then they need to be added to the docker image as well. It is assumed that you are working in the container. Add packages as you normally would. Once your new materials and new packages are finalized, follow the steps below.

Update the renv.lock file. You need to run this in R in the container and in the root of the repo. This will add your new packages to renv.lock. Pay attention to what is changed. If it looks ok, go forward.

renv::snapshot(type="all")

Rebuild the container with the new packages. Run this in a local terminal in the root of the repo. Increment the version number as needed.

docker build --platform=linux/amd64 -t ghcr.io/nbisweden/workshop-raukr:1.4 -t ghcr.io/nbisweden/workshop-raukr:latest --file dockerfile .

Push image back to repository

# login if needed
# echo "personalaccesstoken" | docker login ghcr.io -u githubusername --password-stdin

docker push ghcr.io/nbisweden/workshop-raukr:1.4
docker push ghcr.io/nbisweden/workshop-raukr:latest

Convert HTML slides to PDF

docker run --platform=linux/amd64 -v $PWD:/work astefanutti/decktape url-to-slide.html /work/output.pdf

Tips & Conventions

For compute heavy steps, save intermediates and read them in
Be mindful of the size of files
- Store large data files elsewhere (dropbox, google drive etc) and link them
- If you have images that are more than a few hundred KB in size, scale them down to about 600px-800px and compress them
Use simple topic labels and do not make them needlessly complex
The qmd files must be in the correct location when rendering/previewing else metadata from config is not used.
Declare R packages at the beginning of every qmd document
qmd files must have a format defined, either format: html or format: revealjs
Make a note of the default execute settings in _quarto.yml. This applies to all documents. You can override this by copying the code below to the yaml part of your document and modifying it.
```
execute:
  eval: true
  echo: false
```
Use level 2 heading (##) as the highest level heading
Bullet points are defined by -
Define options in code chunks using #| like #| echo: true
Adjusting dimension of images ![Caption](path/to/image.jpg){width="50%"}
Divs are defined using ::: and classes are defined using {.class}
- Example of a class on a div
```
::: {.callout-note}
content
:::
```
Example of a class on a span [Content]{.class}
Columns are defined as such

:::: {.columns}
::: {.column width="50%"}
Contents
:::
::: {.column width="50%"}
Contents
:::
::::

Remember to spell-check your document
- Language used is en-us
To view a demo report, click here

RevealJS

These are slide specific info. Comparisons here are to xaringan used previously for RaukR.

Slides are defined by ## rather than ---
Manual increment is defined by . . . rather than --
Horizontal rule is defined by --- rather than ***
Presenter notes are defined by :::{.notes} content ::: rather than ???
For small notes in the bottom of the slide, you can use

::: {.aside}
Contents
:::

If content overflows the slide in vertical direction, add class .scrollable

::: scrollable
content
:::

To view a demo presentation, click here

NBISweden / raukr-2024