ggcorr - Plot a correlation matrix with ggplot2

# Basketball statistics provided by Nathan Yau at Flowing Data.
nba <- read.csv("http://datasets.flowingdata.com/ppg2008.csv")
# Default output.
ggcorr(nba[, -1])

# Labelled output, with coefficient transparency.
ggcorr(nba[, -1],
       label = TRUE,
       label_alpha = TRUE,
       name = "") +
  ggplot2::theme(legend.position = "bottom")

# Custom options.
ggcorr(
  nba[, -1],
  geom = "circle",
  max_size = 6,
  size = 3,
  hjust = 0.75,
  angle = -45,
  palette = "PuOr" # colorblind safe, photocopy-able
) + ggplot2::labs(title = "Points Per Game")

## Warning: Removed 210 rows containing missing values (geom_point).