Reproducibility of parallel tasks in R

Reproducibility is important. More important than ever. However, making a project reproducible is not as trivial as it sounds.

Using ccache to speed up R package checks on Travis CI

Introduction The problem The mlr use case The solution Code Introduction Continuous integration checking for R packages is usually done on Travis CI because the R community has established a community driven build framework for R. In case you are not aware, there are also other tools that try to simplify the CI tasks for R even more. This works great for simple checking of small R packages but once it comes to packages that have a lot of dependencies, developers sometimes run into troubles regarding build time.

Arch Linux setup guide tailored towards data science, R and spatial analysis

This guide reflects my view on how to setup a working Arch Linux system tailored towards data science, R and spatial analysis. If you have suggestions for modifications, please open an issue at https://github.com/rbind/pat-s_web/. Enjoy the power of Linux!

Convert NEWS.md to ASCII NEWS

Maybe you know that for some packages in R there is an entry 'Package NEWS' in the help pane of RStudio. However, it is a bit of mistery how to provide this NEWS entry there for maintainers, especially since the recent wide spread use of NEWS.md in R package development.

Introducing R Package 'oddsratio'

Usually, this calculation is done by setting all predictors to their mean value, predict the response, change the desired predictor to a new value and predict the response again. These actions results in two log odds values, respectively, which are transformed into odds by exponentiating them. Finally, the odds ratio can be calculated from these two odds values.