Correlation heatmap

A heatmap of the correlation matrix over the numeric columns, annotated with the rounded coefficients.

Usage

plot_correlation(df, method = c("pearson", "spearman"))

Arguments

df

A data frame.

method

Correlation method: "pearson" or "spearman".

Value

A ggplot2 object, or NULL (with a warning) if there are fewer than two numeric columns.

Examples

plot_correlation(iris)