Actually, the replication seems to be correct. See Figure 1 in the original here: http://datacolada.org/wp-content/uploads/2014/03/Strack-et-al-1988-cartoons.p

Actually, the replication seems to be correct. See Figure 1 in the original here: http://datacolada.org/wp-content/uploads/2014/03/Strack-et-al-1988-cartoons.pdf http://datacolada.org/wp-content/uploads/2014/03/Strack-et-a... I applaud both the original and replication authors for including clear illustrations. And at a glance, Strack et al seems to be a well written paper.