Blog Archives

3 reasons to not write that new code, and how I failed at it.

September 15, 2018
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3 reasons to not write that new code, and how I failed at it.

Introduction We all know that feeling. We have this great idea about a new project, feature, function, piece of code. What do we want? Write that amazing new code! When do we want it? Right NOW! The aim of this post is to try and give you at 3 good...

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cRafty tRicks – No more typing brackets!

September 1, 2018
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cRafty tRicks – No more typing brackets!

Calling functions in R usually involves typing brackets. And since many of our actions in R involve calling a function, we will have to type a lot of brackets working with R. Often it would make our life a lot easier if we could omit the need to type brackets where convenient. We will do exactly that today. Work in...

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R:case4base – code profiling with base R

August 18, 2018
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R:case4base – code profiling with base R

Introduction In this summertime post in the case4base series, we will look at useful tools in base R, which let us profile our code without any extra packages needed to be installed. We will cover simple and easy to use speed profiling, more complex profiling of performance and memory and, as always, look at alternatives to base R as well,...

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RStudio:addins part 5 – Profile your code on keypress in the background, with no dependencies.

August 4, 2018
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RStudio:addins part 5 – Profile your code on keypress in the background, with no dependencies.

Introduction Profiling our code is a very useful tool to determine how well the code performs on different metrics. The addin we will create in this article will let us use a keyboard shortcut to run profiling on R code selected in RStudio without blocking the session or requiring any external packages. Specifically for very simple overview use, it may be beneficial...

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RStudio:addins part 4 – Unit testing coverage investigation and improvement, made easy

July 21, 2018
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RStudio:addins part 4 – Unit testing coverage investigation and improvement, made easy

Introduction A developer always pays his technical debts! And we have a debt to pay to the gods of coding best practices, as we did not present many unit tests for our functions yet. Today we will show how to efficiently investigate and improve unit test coverage for our R code, with focus on functions governing our RStudio addins, which...

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A primer in using Java from R – part 2

July 7, 2018
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A primer in using Java from R – part 2

Introduction In this part of the primer we discuss creating and using custom .jar archives within our R scripts and packages, handling of Java exceptions from R and a quick look at performance comparison between the low and high-level interfaces provided by rJava. In the first part we talked about using the rJava package to create objects, call methods and work...

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A primer in using Java from R – part 1

June 23, 2018
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A primer in using Java from R – part 1

Introduction This primer shall consist of two parts and its goal is to provide a walk-through of using resources developed in Java from R. It is structured as more of a “note-to-future-self” rather than a proper educational article, I however hope that some readers may still find it useful. It will also list a set of references that I found...

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R:case4base – data aggregation with base R

June 9, 2018
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R:case4base – data aggregation with base R

Introduction In the previous articles of the R:case4base series we discussed and learned how to reshape data with base R to a form that is practical for our use and how to subset data to get the relevant parts of it with base R. In this one, we will look at aggregation techniques using base R’s stats::aggregate generic function, focusing on the method...

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RStudio:addins part 3 – View objects, files, functions and more with 1 keypress

May 26, 2018
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RStudio:addins part 3 – View objects, files, functions and more with 1 keypress

Introduction In this post in the RStudio:addins series we will try to make our work more efficient with an addin for better inspection of objects, functions and files within RStudio. RStudio already has a very useful View function and a Go To Function / File feature with F2 as the default keyboard shortcut and yes, I know I promised automatic...

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RStudio:addins part 2 – roxygen documentation formatting made easy

May 12, 2018
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RStudio:addins part 2 – roxygen documentation formatting made easy

Introduction Code documentation is extremely important if you want to share the code with anyone else, future you included. In this second post in the RStudio:addins series we will pay a part of our technical debt from the previous article and document our R functions conveniently using a new addin we will build for this purpose. The addin we will create...

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