ggplot2 geom_area overlay area plots in front of each other

Question

I am trying to make an area plot with the different areas are overlaid on one another rather than stacked.

I have a dataframe that looks like this:

Answer 1

As Nathan wrote you have to use geom_area(position = "identity", ...)

But before this you should reorder the levels of variable:

df$variable <- factor(df$variable, unique(df[order(df$value, decreasing = T),"variable"]) )

or

df$variable <- reorder(df$variable, df$value, function(x) -max(x) )