TLDR: For high quality images in HTML and Word outputs change your DPI setting to 200 or 300. The default DPI of figures created by R Markdown or Quarto for HTML and Word outputs is 96 (dots per inch - resolution). This may be sufficient for web purposes (HTML), but not sufficient for publishing manuscripts (Word). PDFs include vector graphics and are therefore infinite resolution. In R Markdown, DPI can be changed in the set-up chunk, by including knitr::opts_chunk$set(dpi = 300) in the set-up chunk:

Continue reading

TLDR: library(consort) is a great package for creating CONSORT/patient flow diagrams in R. Thank you author Alim Dayim! Jump to example code. Documentation. Introduction The easiest way to make a one-off diagram is using something with a graphical interface, such as Power Point, Omnigraffle, or Lucidchart, just to name a few. If, however, you need something that updates automatically based on the underlying dataset changing, then a programmatical solution using R is possible.

Continue reading

What is Quarto? Prerequisites 1. Create a new Quarto website project Troubleshooting 2. Edit your Quarto website 3. Add a page to your website 4. Add R code to your website 5. Serve your website using Netlify Optional: If want to keep the site for longer than 1h 6. Update your website Optional advanced: automatic deploys via GitHub I’ve put together a quick ‘getting started with Quarto and Netlify and GitHub (optional) workshop’.

Continue reading

The HealthyR Advent Calendar 2022 was a series of 24 R tips I shared on Twitter last December It is based on “R for Health Data Science” by Harrison and Pius. Use JKL20 for 20% off, including free worldwide shipping. Here’s a selection of the most popular ones, all 24 can be fount at this website: https://healthyradvent.netlify.app/ More information about HealthyR, including the book and freely available resources can be found at: https://healthyr.

Continue reading

There are several different ways to make maps in R, and I always have to look it up and figure this out again from previous examples that I’ve used. Today I had another look at what’s currently possible and what’s an easy way of making a world map in ggplot2 that doesn’t require fetching data from various places. TLDR: Copy this code to plot a world map using the tidyverse:

Continue reading

There’s some explanation on what reshaping data in R means, why we do it, as well as the history, e.g., melt() vs gather() vs pivot_longer() in a previous post: New intuitive ways for reshaping data in R That post shows how to reshape a single variable that had been recorded/entered across multiple different columns. But if multiple different variables are recorded over multiple different columns, then this is what you might want to do:

Continue reading

I’ve just set up a single page website (= online business card) for myself and my husband: https://pius.cloud/ . This post summarises what I did. If you’re looking to get started with something super quickly, then only the first two steps are essential (Creating a website and Serving a website). Creating a website (using Nicepage) I’ve created websites using various tools such as straight up HTML, Wordpress, Hugo+blogdown (this site - riinu.

Continue reading