[R] how to add p values to bar plot?

[Ana Marija]

Hi,

I have a bar plot (green colors in attach) which I made with this:

library(ggplot2)
df <- data.frame("prop" = c(7.75,70.42), "Name" = c("All Genes","RG Genes"))
p<-ggplot(data=df, aes(x=Name, y=prop,fill=Name)) +
  geom_bar(stat="identity")+ labs(x="", y = "Proportion of cis
EQTLs")+ scale_fill_brewer(palette="Greens") +
theme_minimal()+theme(legend.position = "none")
p

What do I need to change in my plot so that I have plot with p value
shown on the 2nd attached figure (gray and blue)?

Thanks
Ana

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