Non-standard-evaluation and standard evaluation in dplyr

THIS POST IS NO LONGER ENTIRELY RELEVANT. DPLYR 0.7 HAS A SLIGHTLY DIFFERENT (AND SLIGHTLY MORE INTUITIVE) WAY OF WORKING WITH NON-STANDARD EVALUATION. EDIT: IT IS COMPLETELY DIFFERENT NOW. AND I RECOMMEND I love the dplyr package with all of its functions, however if you use normal dplyr in functions in your package r-cmd-check will give you a warning: R CMD check NOTE: No visible binding for global variable NAME OF YOUR VARIABLE 1. [Read More]

Tidying your data

Introduction To make analyses work we often need to change the way files look. Sometimes information is recorded in a way that was very efficient for input but not workable for your analyses. In other words, the data is messy and we need to make it tidy. Tidy data means 1: Each variable forms a column. Each observation forms a row. Each type of observational unit forms a table. [Read More]

From spss to R, part 2

Introduction In this lesson we will open a .sav file in Rstudio and manipulate the data.frame. We will select parts of the file and create some simple overviews. First time with R? No problem, see lesson 1 Download a .sav (SPSS) file I downloaded the following dataset from DUO (Dienst uitvoering onderwijs): [Aantal wo ingeschrevenen (binnen domein ho)][3]. This dataset has a cc0 declaration, which means it is in the public domain and we can do anything we want with this file. [Read More]