'm using ggplot2 to plot two variables at a time. I'm plotting two age groups
and overall data on the same graph. I'm also using stat_cor form the ggpubr
package to report correlations for the two groups and overall data.
I want each stat_cor label to have a custom subscript - the group name ("old",
"young"). I have managed to do this for the overall data, but I don't know how
to add custom labels for each group separately. I'd like the labels to look
like this: https://imgur.com/a/naF7uNW
> for (i in 18:21) {
p1 <- ggplot(df, mapping=aes(x = Age, y = unlist(df[i]),
color=factor(AgeGroup))) +
geom_smooth(method="lm") +
geom_point(size = 4) +
geom_smooth(data=df, mapping = aes(x = Age, y = unlist(df[i]), group=1,
color="black"), method = "lm") +
scale_colour_discrete(name="Group", labels=c("young", "old", "overall")) +
stat_cor(aes(color = factor(AgeGroup), y = unlist(df[i]))) +
stat_cor(aes(x = Age, y = unlist(df[i]), group=1, color="black",
label = paste(sub("R",expression("R"[overall]),..r.label..),
..p.label.., sep = "~`,`~")))
ggsave(p1, file=paste0("Age_", names(df)[i], ".png"), scale=1)
}
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