Posted by Roel M. Hogervorst

Moving parts of a country over a map

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 the map only move in the xy direction, but you can also turn them, and make them bigger or smaller. Today I show you how I made a part of the Netherlands … Continue reading →

add abbreviations to your rmarkdown doc

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 create abbreviations, you don’t have to care about the ordering, just put them down as you realize you are creating them. The … Continue reading →

add abbreviations to your rmarkdown doc

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 create abbreviations, you don’t have to care about the ordering, just put them down as you realize you are creating them. The … Continue reading →

Adding bananas from the commandline (extending the oomsifier)

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 the image. I wanted to make an API too, but that will have to wait till next year. Today we will create a commandline script that … Continue reading →

Adding bananas from the commandline (extending the oomsifier)

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 the image. I wanted to make an API too, but that will have to wait till next year. Today we will create a commandline script that will … Continue reading →

If blogging was like academia, we would all be saved, thank you for your edits.

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 spelling error (no excuses, I really make those a lot). Then a day or two later Jon Spring walked through the code and realized that I switched two … Continue reading →

If blogging was like academia, we would all be saved, thank you for your edits.

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 spelling error (no excuses, I really make those a lot). Then a day or two later Jon Spring walked through the code and realized that I switched two … Continue reading →

Downloading files from a webserver, and failing.

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 reading in 600 or so text files which is not really a big deal. I thought. This post shows you where I went wrong Also … Continue reading →

Building the oomsifyer

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 any picture. Now, you might be thinking… Really, why would you add a dancing banana to a picture, but I don’t have time for that kind of … Continue reading →

Where to live in the Netherlands based on temperature XKCD style

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 Netherlands. The idea is simple, determine where you want to live based on your temperature preferences. First the end result: How to read this plot? In … Continue reading →

UseR Brussels 2017

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, I am so going to use Fast Frugal Trees in the future for instance and I saw a lot of shiny applications and R professional. But best of all. … Continue reading →

Turning kindle notes into a tidy data

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!) create interactive webpages with Shiny (thank you Winston Chang). Control our lifx lights with lifxr (great work Carl!) and use … Continue reading →

Writing manuscripts in Rstudio, easy citations

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 time. It is now relatively easy to add citations to documents in RStudio. **The goal is not think about formatting, and citations, … Continue reading →

Generate text using Markov Chains (sort of)

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 (although it does nothing and is absolutely not useful) that talks like Captain Picard. I actually wanted to use a Markov Chain … Continue reading →

Plotting a map with ggplot2, color by tile

Introduction 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 here I combine all that knowledge. So if something is absolutely wrong/ ridiculous / stupid / slightly off or not … Continue reading →