Blog Archives

The fastest cyclists of Europe live in …

March 4, 2019
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The fastest cyclists of Europe live in …

The fastest cyclists of Europe live in …Analyzing STRAVA data to find out which city has the faster cyclists with R and R-shiny. My contribution to the shiny contest.A shiny app visualizing STRAVA segments in London and Paris and seeing where peopl...

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A shiny Web App from LEGO— truck + trailer

January 21, 2019
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A shiny Web App from LEGO— truck + trailer

How to Build a Shiny “Truck” part 2 — Let the LEGO “truck” app pull a trailer. An example of a modularized shiny app. In September 2018 I used an automotive metaphor explaining a large scale R shiny app. RViews published the article. I would summarize the article in one phrase. Upon building large applications (trucks) in R shiny there are a lot...

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Travis CI for R — Advanced guide

January 13, 2019
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Travis CI for R — Advanced guide

Travis CI for R — Advanced guide Continuous integration for building an R project in Travis CI including code coverage, pkgdown documentation, osx and multiple R-Versions Photo by Guilherme Cunha on UnsplashTravis CI is a common tool to build R packages. It is in my opinion the best platform to use R in continuous integration. Some of the most downloaded R packages built at this...

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Medium + r-bloggers — How to integrate?

January 13, 2019
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Medium + r-bloggers — How to integrate?

Medium + r-bloggers — How to integrate? Build up a PHP script that allows you to post your Medium articles on r-bloggers.com. The script filters an RSS feed by item tags. Photo by Ato Aikins on UnsplashMotivation I started my blog about R on Medium. Medium is a wonderful platform with a great user interface. The idea to use it came by reading a blog post...

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Tutorial: An app in R shiny visualizing biopsy data —  in a pharmaceutical company

January 7, 2019
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Tutorial: An app in R shiny visualizing biopsy data —  in a pharmaceutical company

Tutorial: An app in R shiny visualizing biopsy data — in a pharmaceutical company Learn how to build a shiny app for the visualization of clustering results. The app helps to better identify patient data samples, e.g. during a clinical study. This tutorial is a joint work effort. The Tutorial was presented by Olaf Menzer in a workshop at the ODSC West Conference in...

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RTest: pretty testing of R packages

January 7, 2019
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RTest: pretty testing of R packages

The specflow and cucumber.io for R. Enabling non-coders to interpret test reports for R-packages, moreover allowing non-coders to create test cases. A step towards simple r package validation. by startupstockphotos http://startupstockphotos.com/post/143841899156Table of contents Why RTest? What’s special about RTest? An example of a test implementation with RTest. Further Reading Why RTest? Testing in R seems simple. Start by using usethis::test_name("name") and off you go by coding your tests in...

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Music listener statistics: last.fm’s last.year as an R package

January 1, 2019
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Music listener statistics: last.fm’s last.year as an R package

When starting analyzing last.fm scrobbles with the last.week and last.year function I was always missing some plots or a pure data table. That is why I developed the package “analyzelastfm” as a simple R6 implementation. I wanted to have different album statistics, as e.g the #of plays per album, divided by the # of tracks on the album. This...

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Very shiny holidays!

December 26, 2018
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Very shiny holidays!

How would I miss to program just a little bit during the holiday season? But I didn’t want to work on something serious, so I decided to checkout some ground work on R-Shiny + JQuery + CSS. The result are some nice holiday greetings inside a shiny app: An app to greet your family with shinyI just googled CSS + holidays and...

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Interesting packages taken from R/Pharma

December 9, 2018
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Interesting packages taken from R/Pharma

A few month ago I joined the R/Pharma conference in Cambridge, MA. As a take away I thought of my project and how I can improve, with solutions others provided. Mainly solutions in R are R-packages. So I’m a R-Shiny programmer in a regulated environment, so the list of the solutions I took are mainly helping you, if you are...

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Why do we need human readable tests for a programming language?

October 9, 2018
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Why do we need human readable tests for a programming language?

Software can save lifes! — R and Python programming language rank in the Top10 of programming languages today. Both languages come out of open-source and research environments and are now moving into the industry. Testing software is really essential in industry. Why to talk about human readable tests? Let me introduce you to my working environment. On a daily basis I’m writing code...

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