Articles by Albert Rapp

How to collect dataviz from Twitter into your note-taking system

April 13, 2022 | Albert Rapp

Intro It is mid-April and the #30daychartchallenge is well on its way. One glace at the hashtag’s Twitter feed suffices to realize that there are great contributions. That’s a perfect opportunity to collect data viz examples for future inspirations. Ideally, I can scroll through Twitter and with a ... [Read more...]

Recreating the Storytelling with Data look with ggplot

March 28, 2022 | Albert Rapp

So, I found a great video from Storytelling with Data (SWD). In this video, a data storyteller demonstrates how a dataviz that does not demonstrate a clear story can be improved. Let’s take a look at the dataviz but, first, here’s the data.

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library(tidyverse) dat % mutate(...

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How to use functional programming for ggplot

March 24, 2022 | Albert Rapp

A couple of weeks back, I recreated an info graphic with ggplot2. The result and the whole story is embedded in this thread on Twitter: The fun thing about getting better at #ggplot2 is that you begin to mimick other #dataviz.Here is a practice #rstats info graphic I created ...

[Read more...]

How to use Fonts and Icons in ggplot

March 3, 2022 | Albert Rapp

For some reason, using other than the default font in plots has been a major problem for me in R. Supposedly, one can use the extrafont package to manage all of that but I found it too cumbersome. Instead, I found out that the showtext package can make my life ...

[Read more...]

4 Ways to use colors in ggplot more efficiently

February 18, 2022 | Albert Rapp

When creating a plot I frequently catch myself using way too many colors. Thus, I have to remind myself often to keep things simple. Usually, this makes a data visualization way more effective. Luckily, I found a neat datawrapper blogpost by Lisa Charlotte Muth that shows us how to reduce ...

[Read more...]

Interactive ggplots, user feedback, and a little bit of javascript magic with Shiny

January 16, 2022 | Albert Rapp

I’ve been reading Mastering Shiny by Hadley Wickham lately and one of the things that intrigued me is that you can make ggplots interactive. Though I believe that there are limitation to the level of interactiveness compared to using, say, plotly, I really wanted to practice interactive ggplots with ... [Read more...]

Showcasing the janitor package

January 11, 2022 | Albert Rapp

The janitor package contains only a little number of functions but nevertheless it is surprisingly convenient. I never really fully appreciated its functionality until I took a look into the documentation. Of course, other packages can achieve the same...

[Read more...]

ggplot-tips: Learning by Thieving

January 9, 2022 | Albert Rapp

TidyTuesday, the weekly social data project that brings together R users, is a great way to connect to the R community and learn to wrangle and visualize data. But more importantly, it is a superb chance to learn new data visualization skills by doing thieving. Let me elaborate. Each week, ...

[Read more...]

A couple of visualizations from ggforce

December 30, 2021 | Albert Rapp

It is almost the beginning of a new year and I have decided to finish off this year with a quick blog post. Also, friends were shaming me that I have been slacking off on this blog lately. Therefore, let’s get started right away. We’ll keep things simple ...

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6 simple Shiny things I have learned from creating a somewhat small app

December 8, 2021 | Albert Rapp

A couple of weeks back, I wanted to explain to my student what I mean when I talk about the “variance of the sample variance”. In my head, this term sounds quite confusing and contains the word “variance” at least one too many t... [Read more...]

ggplot tips: Arranging plots

October 27, 2021 | Albert Rapp

In this week’s TidyTuesday, I noticed that I am frequently not using only ggplot2 to create plots. In fact, it has become essential to me to leverage the powers of other great additional packages that align well with ggplot2. Therefore, I decided...

[Read more...]

An Exploratory Introduction to the Plotly Package

October 15, 2021 | Albert Rapp

Currently, I am quite curious about interactive plots which is why I am reading Scott Murray’s highly recommendable book on D3. For those of you who don’t know it, D3.js is a JavaScript library that is great for creating amazing interactive Data-Driven-Documents on the web. Unfortunately, compared ... [Read more...]

Did German Voters Become More Impulsive?

October 2, 2021 | Albert Rapp

A bit more than two weeks ago, Germany held a federal election and, naturally, this is always reason for a lot of discussions and subjective truths. One subjective truth I encountered myself related to how fast the party CDU/CSU was able to collect and...

[Read more...]

Writing Versatile Functions with R

September 15, 2021 | Albert Rapp

This week, I had to deal with two very similar tasks on two very similar but not identical data sets that required me to write a function that is versatile enough to deal with both data sets despite their subtle differences. The differences that had to be accounted for mainly ... [Read more...]

ggplot tips: Using position_stack() for Individual Positioning

September 10, 2021 | Albert Rapp

For a long time I have wondered why some people would use position_stack() for position alignment instead of the simpler version position = "stack". Recently, though, I learned the purpose of the former approach when I tried to add data label...

[Read more...]

ggplot tips: Assigning Labels to an Aesthetic

August 18, 2021 | Albert Rapp

This blog post is part of a series I am creating where I collect tips I found useful when I first learned to work with ggplot2. All posts which are part of this series can be found here. In this post I want to deal with how to manually or ...

[Read more...]

Beginning a ggplot2 Series: Logarithmize Your Scales

August 6, 2021 | Albert Rapp

It is not that long ago when I first encountered ggplot2 and decided to learn how to use it1. By no means do I think that I have sufficiently mastered this package yet but as time has passed I have certainly picked up a few tips on my journey to ...

[Read more...]

Is Success Luck or Hard Work?

July 27, 2021 | Albert Rapp

Recently, I decided to try out a few stretches in an effort to stay in shape during long stretches of working from home and not leaving the house. Also, to distract me from my inflexible body I thought I would watch a video on YouTube simultaneously and as luck would ...

[Read more...]

Animating kernel density estimators

July 13, 2021 | Albert Rapp

For my first post on this blog I decided to create an animation using the animation package. To give this animation some purpose let me demonstrate how kernel density estimators work with the help of an animation. In general, kernel density estimators ...

[Read more...]

About

July 6, 2021 | Albert Rapp

Welcome! My Name is Albert Rapp and I am currently a PhD student in mathematics at Ulm University. As part of my obligations as a PhD student I had to teach an applied course on statistical techniques using the statistical software R. Interestingly, I ... [Read more...]

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Articles by Albert Rapp

How to collect dataviz from Twitter into your note-taking system

Recreating the Storytelling with Data look with ggplot

How to use functional programming for ggplot

How to use Fonts and Icons in ggplot

4 Ways to use colors in ggplot more efficiently

Interactive ggplots, user feedback, and a little bit of javascript magic with Shiny

Showcasing the janitor package

ggplot-tips: Learning by Thieving

A couple of visualizations from ggforce

6 simple Shiny things I have learned from creating a somewhat small app

ggplot tips: Arranging plots

An Exploratory Introduction to the Plotly Package

Did German Voters Become More Impulsive?

Writing Versatile Functions with R

ggplot tips: Using position_stack() for Individual Positioning

ggplot tips: Assigning Labels to an Aesthetic

Beginning a ggplot2 Series: Logarithmize Your Scales

Is Success Luck or Hard Work?

Animating kernel density estimators

About

Articles by Albert Rapp

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