Just as 2015 and 2014 I produced an Open Access Heatmap using data provided by the Directory of Open Access Journals (DOAJ). I calculated the number of Open Access Journals per country as listed by the DOAJ (this quite trivial data can be downloaded as a CSV file here, it was retrieved from the DOAJ yesterday). Using this CSV file with the online service CartoDB I produced the following heatmap visualizing the number of Open Access Journals per