R Benutzer Treffen Köln / R user meeting in Cologne

Fans and friends of R, let's meet again to talk about our favorite language for statistical programming, anything related to data and the purpose of life.

Agenda:

18:00 Welcome

18:15 Talks

Hans W. Borchers: Optimization with R -- Tips and Trick

There are almost 100 packages listed on the CRAN optimization task view. We will discuss some of the more important packages in areas such as nonlinear optimization with and w/o constraints, least-squares problems, non-smooth and global optimization, and mixed integer programming. Tips and tricks will be provided for high precision or high-dimensional problems, for equality constraints, for minimax problems, etc.

Frederik Aust: papaja -- Prepare APA Journal Articles reproducibly with R Markdown

Reproducible workflows and dynamic documents have attained great popularity in the R community. The packages knitr and rmarkdown provide a great infrastructure to develop and customize document templates for specific purposes. papaja is an R package in the making that provides document templates and helper functions that facilitate writing computationally reproducible scientific reports according to the style guidelines of the American Psychological Association. I will showcase some of the package's features and try to provide an overview on how to create custom R Markdown templates.

From 20:00 Klönen & Kölsch

Pizzas will be provided.