Roel M. Hogervorst | R-bloggers

Setting up a version controlled shiny-server

February 5, 2018 | Roel M. Hogervorst

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 the server. Shiny server (I used the open source version) has multiple installers provided by RStudio. The installers for shiny-server ... [Read more...]

Setting up a version controlled shiny-server

February 5, 2018 | Roel M. Hogervorst

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 the server. Shiny server (I used the open source version) has multiple installers provided by RStudi... [Read more...]

Moving parts of a country over a map

January 28, 2018 | Roel M. Hogervorst

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. ... [Read more...]

Moving parts of a country over a map

January 28, 2018 | Roel M. Hogervorst

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. ... [Read more...]

add abbreviations to your rmarkdown doc

January 23, 2018 | Roel M. Hogervorst

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 ... [Read more...]

add abbreviations to your rmarkdown doc

January 23, 2018 | Roel M. Hogervorst

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 ... [Read more...]

Adding bananas from the commandline (extending the oomsifier)

December 28, 2017 | Roel M. Hogervorst

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 ... [Read more...]

Adding bananas from the commandline (extending the oomsifier)

December 28, 2017 | Roel M. Hogervorst

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.... [Read more...]

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

December 18, 2017 | Roel M. Hogervorst

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 thro... [Read more...]

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

December 18, 2017 | Roel M. Hogervorst

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 ... [Read more...]

Downloading files from a webserver, and failing.

December 7, 2017 | Roel M. Hogervorst

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... [Read more...]

Building the oomsifyer

November 27, 2017 | Roel M. Hogervorst

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... [Read more...]

Where to live in the Netherlands based on temperature XKCD style

November 19, 2017 | Roel M. Hogervorst

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 ... [Read more...]

UseR Brussels 2017

July 26, 2017 | Roel M. Hogervorst

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 ... [Read more...]

Turning kindle notes into a tidy data

May 7, 2017 | Roel M. Hogervorst

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 light... [Read more...]

Writing manuscripts in Rstudio, easy citations

March 13, 2017 | Roel M. Hogervorst

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... [Read more...]

Generate text using Markov Chains (sort of)

January 20, 2017 | Roel M. Hogervorst

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 ... [Read more...]

Plotting a map with ggplot2, color by tile

January 5, 2017 | Roel M. Hogervorst

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 absolutel... [Read more...]

Submitting your first package to CRAN, my experience

July 8, 2016 | Roel M. Hogervorst

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 a description of my brand new package: badgecreatr, then a description of steps to take for submission. Package description When ...

[Read more...]

Submitting your first package to CRAN, my experience

July 8, 2016 | Roel M. Hogervorst

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 a description of my brand new package: badgecreatr, then a description of steps to take for submission. Package description When ...

[Read more...]

R-bloggers

R news and tutorials contributed by hundreds of R bloggers

Articles by Roel M. Hogervorst

Setting up a version controlled shiny-server

Setting up a version controlled shiny-server

Moving parts of a country over a map

Moving parts of a country over a map

add abbreviations to your rmarkdown doc

add abbreviations to your rmarkdown doc

Adding bananas from the commandline (extending the oomsifier)

Adding bananas from the commandline (extending the oomsifier)

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

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

Downloading files from a webserver, and failing.

Building the oomsifyer

Where to live in the Netherlands based on temperature XKCD style

UseR Brussels 2017

Turning kindle notes into a tidy data

Writing manuscripts in Rstudio, easy citations

Generate text using Markov Chains (sort of)

Plotting a map with ggplot2, color by tile

Submitting your first package to CRAN, my experience

Submitting your first package to CRAN, my experience

Articles by Roel M. Hogervorst

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