Research School for Socio-Economic and
Natural Sciences of the Environment
Research School for Socio-Economic and
Natural Sciences of the Environment

R Users Discussion Group Meeting

Date: 23 October 2018
Time: 16:00 - 17:30
Location: Wageningen Campus, Radix building, C0093

The R Users Meeting is a monthly meeting for people working with R. PhD and MSc students, as well as staff members, both beginners as well as advanced R users are welcome. The meeting offers an opportunity to help each other with specific questions and exchange ideas. In each meeting a specific topic is discussed by demonstrating and discussing examples of R functions and example data. The second part of each meeting is reserved for short questions on R codes and offers opportunity to get advice on your R code and how to fix or improve it. The meetings are hands-on, so please try to run the code and prepare your questions prior to the meeting. Also, bring your laptop to the meeting. New group members are welcome and are kindly asked to contact us.

There is also an online meeting place where the participants can share problems and experiences additional to the monthly meeings: In the text you will find links to a few R scripts, R learning resources, a schedule of upcoming meetings, and the issue section where you can discuss your problems. You can visit everything; however to post or answer an issue, you have to create an account and log in.

For more information contact the R user group organizers (

Upcoming meetings

  • 23 October 2018: How git you do this summer? This is an interactive session where we look at how people use git and GitHub/GitLab in their research! So come along and show us whatever your experience is. If you just tried it out and which features you found helpful. If you didn’t try git yet, this is the chance to have a look what could be in for you. We from the R-Users organiser team also have git-experience, so there will definitely by something to see.
    Git in a few lines:

Past meetings

  • 6 June 2018: Introduction to Git for R projects. Git is a popular open source version control system that enables collaborating on code development. Git hosting platforms like GitHub and GitLab offer a number of tools that make project management easier. In this session, the background and concept of Git and GitHub/GitLab will be introduced, with examples of the ways you can use it in practice for efficient project management and collaboration. R package development will be used as a case study. Presented by: Dainius Masiliunas, Laboratory of Geo-information Science and Remote Sensing.
  • 19 April 2018: Data Types and Data Modelling in R. This session will recall basic R data types first. Later, we will have a look at how you can efficiently model your data in R (represent your bits and bytes as concise entities).
  • 14 March 2018: performing computationally reproducible research with R, loosely based on the books Reproducible Research with R and R Studio, Gandrud, 2015, and The Practice of Reproducible Research: Case Studies and Lessons from the Data-Intensive Sciences, Kitzes et al. 2017. We will touch upon technical solutions (such as exporting R-scripts and results, integrated, to html or pdf documents), but also discuss points of awareness, and practical considerations and priorities in the daily practice of PhDs and other researchers. We invite you to share your ideas and experiences during this session.
  • 14 February 2018: Joost van Heerwaarden: Loops, functions and apply
  • 16 January 2018: Johannes Kruisselbrink (Biometris): C++ code from R using Rcpp
  • 5 December 2017: R-Users Sinterklaas meeting.
    We will do some coding exercises to learn from each other.
    Homework: Prepare 1 basic (level Fibonacci numbers) and 1 advanced (level quick-sort algorithm) coding exercise. They can be very specific to your field, but you need to be able to explain them, so everybody can solve them. You can also include plotting (e.g. how to plot a dataset in a certain way).
    Reward: We will provide some Kruidnoten and drinks!
  • 7 November 2017: Making presentations in Rstudio: my (good/bad) experiences with IOSLIDES.
  • 3 October 2017: The Good, the Bad and the Ugly
  • 14 June 2017
  • 17 May 2017: An introduction to parallel programming with R12 April 2017: ggplot2 and other tools
  • 15 February 2017: Topic: not sure yet, but perhaps basic descriptive statistics in R. (CANCELLED)
  • 25 January 2017: Benjamin Brede (PhD candidate, Laboratory of Geo-information Science and Remote Sensing): "Raster processing with R: Reading, writing, manipulating, analyzing and modeling of gridded spatial data."
    It concerns the R-packages ‘raster’ and ‘gdalUtils’; Level: advanced
  • 14 December 2016: Ron Wehrens (Biometris) will talk about the Lattice plotting system and about good plotting habits. So: plotting in R! Level indication: somewhere between basic and intermediate
  • 16 November 2016: Vincent Garin, PhD candidate at Biometris: “Data structure and good practises in R”