8.4 ggcorrplot function

The ggcorrplot function has a number of options for customizing the output. For example,

• hc.order = TRUE reorders the variables, placing variables with similar correlation patterns together.

• type = "lower" plots the lower portion of the correlation matrix.

• lab = TRUE overlays the correlation coefficients (as text) on the plot.

ggcorrplot(r, 
           hc.order = TRUE, 
           type = "lower",
           lab = TRUE)