I am trying to plot a correlation matrix using the “mtcars” data and “corrplot” package in R. The picture shows what I have plotted using the “corrplot” function. I would like to have the drat and gear correlation of 0.7 show as 0.70 but even the number.digits = 2 argument does not show 0.70. Is there anyway to show the trailing zero?

I tried using the number.digits argument and searching other posts but did not find a solution.