ggplot2: Problem with x axis when adding regression line equation on each facet

Question

Based on the example here Adding Regression Line Equation and R2 on graph, I am struggling to include the regression line equation for my model in each facet. However, I don

Answer 1

Probably someone will suggest a better solution, but as an alternative, you can change stat_smooth_func and you can make the final row like this

data.frame(x=1979, y=ypos, label=func_string)

instead of

data.frame(x=xpos, y=ypos, label=func_string)

So, the plot will be like below