Width of error bars in line plot using ggplot2

Question

I have some data with standard errors associated and would like to display these with error bars. That\'s what I have:

# generate some data
hod <- data.f         


        

Answer 1

I have managed to solve a similar issue. In my case I wanted to set both horizontal and vertical errorbar heads to the same size - regardless of the aspect ratio of the plot.

Based on the original posted code:

f <- ggplot_build(dayplot)

f$plot$layers[[5]]$geom_params$width  <- 0.02 * diff(f$layout$panel_params[[1]]$x.range)
f$plot$layers[[6]]$geom_params$height <- 0.02 * diff(f$layout$panel_params[[1]]$y.range)

dayplot <- f$plot

This will set the errorbar head to 2% of the axis range. Maybe could solve your issue.