For a study on the personality correlates of empathic people, I was challenged with presenting 182 correlations on a poster. I settled on radial plots, customized R code I found, and I'm really happy with the results! PDF and more at: https://osf.io/dme3w
Radial plots typically depict several numeric ranges radiating out from a center. Depicting correlations is a challenge because the midpoint (zero) is meaningful. Here, the zero is represented with a black circle, negative correlations are plotted within the black circle, and positive correlations are plotted outside the black circle.