adding correlation test results to ggplot

Question

I'm trying to create a ggplot and add results of a correlation test I have done. Something along the lines of:

p+annotate("text",x=12.5,y=15.25,label=c(cor.test$estimate,cor.test$p.value))

I keep getting error messages no matter what I try. Any ideas?

Answer 1

I have actually managed to add stat details to the plot by using stat_cor() from the package ggpubr

library(ggpubr)
p+stat_cor(method="pearson")

Answer 2

There is a package in development that can do this for you (ggstatsplot is on CRAN).

Here is an example of how to create correlation plot:

    ggstatsplot::ggscatterstats(data = iris, x = Sepal.Length, y = Sepal.Width)

This will produce a plot that looks like the following (you can similarly get results from Spearman's rho (type = 'spearman') or robust correlation test (type = 'robust')):

Check out the documentation of the function for more.