How to change font size of the correlation coefficient in corrplot?
I am plotting correlation plot with corrplot. I want to plot also the correlation coefficients:
require(corrplot)
test <- matrix(data = rnorm(400), nrow=20, ncol=20)
corrplot(cor(test), method = "color", addCoef.col="grey", order = "AOE")
But they are too big in the plot:
Is there any way to make the font of the coefficent smaller? I've been looking at ?corrplot but there are only parameters to change the legend and axis font sizes (cl.cex and tl.cex). pch.cex doesn't work either.
Solution
It is far from the answer, it is kind of a dirty hack, but this works (thanks user20650 for the idea):
cex.before <- par("cex")
par(cex = 0.7)
corrplot(cor(envV), p.mat = cor1[[1]], insig = "blank", method = "color",
addCoef.col="grey",
order = "AOE", tl.cex = 1/par("cex"),
cl.cex = 1/par("cex"), addCoefasPercent = TRUE)
par(cex = cex.before)
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