Author: Roel M. Hogervorst

Hi I’m Roel and this is a my blog. I have an abundance of social links at the bottom of the page to reach me. security issues ? See linkcontinue reading.

If you believe some people, everything is getting worse1. More so in infosec. For the past few years I listened to many many hours of podcasts, many hours where spent...continue reading.

tldr: I created an open dataset for the explicit practice of data munging. Feel free to use it in assignments, but do mention where you got it from (CC-by-4.0). Also...continue reading.

This is a very short post with example code Over time when you move your shiny app from your computer to a server, you want to add some logging. Generally...continue reading.

Last week I set up a shiny server, it was relatively easy! But I wanted something more, a way to make changes on my local computer and push it to...continue reading.

I love making maps, I also love making gifs. In this short post I make an animated gif of parts of a map moving. In this case the parts of...continue reading.

Today a small tip for when you write rmarkdown documents. Add a chunk on top with abbreviations. in the first chunks you set the options and load the packages. Next...continue reading.

Sometimes you just want to add bananas from the commandline. Previously I created a small script that takes an image and adds a dancing banana to the bottom left of...continue reading.

A month ago I posted a short piece inspired by a post by Maële Salmon She actually reached out to me in 10 minutes, telling me I made a weird...continue reading.

Recently I wanted to download all the transcripts of a podcast (600+ episodes). The transcripts are simple txt files so in a way I am not even ‘web’-scraping but just...continue reading.

Today I will show you a quick hack (OK it took me like 4 hours during my travels today yesterday and today), on how to add a dancing banana to...continue reading.

After seeing a plot of best places to live in Spain and the USA based on the weather, I had to chime in and do the same thing for the...continue reading.

I went to UseR-2017 in Brussels. It was my first time at an UseR (I have been to the first satRday), AND I LOVED IT! There were many interesting talks,...continue reading.

It is my dream to do everything with R. And we aRe almost there. We can write blogs in blogdown or bookdown, write reports in RMarkdown (thank you Yihui Xie!)...continue reading.

Intro and setup This is a simple explanation of how to write a manuscript in RStudio. Writing a manuscript in RStudio is not ideal, but it has gotten better over...continue reading.

Inspired by the hilarious podcast The Greatest Generation, I have worked again with all the lines from all the episode scripts of TNG. Today I will make a clunky bot...continue reading.

Last week I was playing with creating maps using R and GGPLOT2. As I was learning I realized information about creating maps in ggplot is scattered over the internet. So...continue reading.

I recently published my first R package to The Comprehensive R Archive Network (CRAN). It was very exciting and also quite easy. Let me walk you through my process. First...continue reading.

Introducing Badgecreatr, a package to create and place badges in your readme.Rmd file on Github. Badgecreatr will create the following badges (aka shields): Installation Install the package with install.packages("badgecreatr") …continue reading.

THIS POST IS NO LONGER ENTIRELY RELEVANT. DPLYR 0.7 HAS A SLIGHTLY DIFFERENT (AND SLIGHTLY MORE INTUITIVE) WAY OF WORKING WITH NON-STANDARD EVALUATION. I love the dplyr package with all...continue reading.