ggplot, loess function without 95%CI option
This isn't really the appropriate forum for that question because the question has nothing to do with mixed-effects models. That said, it really helps to just read the documentation: https://www.rdocumentation.org/packages/ggplot2/versions/3.2.1/topics/geom_smooth The default for loess in modern ggplot2 is indeed the 95% CI. You can adjust this with the level option, e.g. library(ggplot2) ggplot(mtcars, aes(x = mpg, y = hp)) + ? geom_point() + ? geom_smooth(method = 'loess', fill='darkred', level=0.68) + ? geom_smooth(method = 'loess') Note that level=0.68 corresponds to the SE case and provides a shaded area about half as wide as the the default case, which is in line with the Wald approximation that 95% CI = ?2 * SE. Best, Phillip
On 11/10/2019 20:36, Slik, F.W.P. van der wrote:
Hi listers, In ggplot, the loess function is only available with SE. The 95%CI option (level=.95) is unavailable, unfortunately. I think there is demand for such an option. Well, at least I would like to make use of it. Several contributors to stackoverflow have expressed their need and some of them have tried to program a workaround for this issue: https://stackoverflow.com/questions/19643234/fill-region-between-two-loess-smoothed-lines-in-r-with-ggplot, https://stackoverflow.com/questions/44736600/confidence-interval-band-for-a-loess-to-replicate-geom-smooth Unfortunately, their workarounds have their shortcomings. Has anyone a solution for the missing 95%CI option for loess in ggplot? It would be wonderful if the 95%CI band would look like the se band in the ggplot. Thanks in advance. Cheers, Frans van der Slik [[alternative HTML version deleted]]
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