ggcorrplot gains digits argument

[IndrajeetPatil]

This lets the user control how many decimal points to be displayed for correlation coefficients in the matrix.
Importantly, this change is backward-compatible. Previously, you were rounding up digits in the correlation matrix. If that's the case, the function will still display what it used to display.

Here are examples:

library(ggcorrplot)
#> Loading required package: ggplot2

# Compute a correlation matrix
data(mtcars)

# formatted
corr1 <- round(cor(mtcars), 1)

# non-formatted
corr2 <- cor(mtcars)

# Compute a matrix of correlation p-values
p.mat <- cor_pmat(mtcars)

# Visualize the correlation matrix

# preserves formatted matrix
ggcorrplot(corr1, lab = TRUE, digits = 2)

ggcorrplot(corr2, lab = TRUE, digits = 2)

Created on 2018-08-30 by the reprex package (v0.2.0.9000).

[kassambara]

good point, thanks