[R] Plotting Confidence Intervals into a density plot

[Elysa Mitova]

Hi,

I am desperately looking for a way to plot confidence intervals into a
density plot of only one variable (not a scatter plot etc.)

Have you any advice how to do this?

I've only found manual ways to do with "abline", but this is a rather
bothersome method and only works with ggplot (and not ggplot2).

Thank you!

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