How to donate letters to significant differences in R?

[Shahram1]

Hi all,

Its been a few days that I am struggling with a simple question and I really appreciate it if somebody can help me out.

I am trying to get the results of the ANOVA test in R with letters (a,b,c d) instead of asterisks, the same as what SPSS does. I tried to find some resources for that but none of them worked and a few of them were only developed for older versions of R.

My second question is how to donate those letters came from the ANOVA test to, for example, barplot or boxplots?

Bests, Shahram

[nirgrahamuk]

Hi!

To help us help you, could you please prepare a reproducible example (reprex) illustrating your issue? Please have a look at this guide, to see how to create one:

FAQ: How to do a minimal reproducible example ( reprex ) for beginners

A minimal reproducible example consists of the following items: A minimal dataset, necessary to reproduce the issue The minimal runnable code necessary to reproduce the issue, which can be run on the given dataset, and including the necessary information on the used packages. Let's quickly go over each one of these with examples: Minimal Dataset (Sample Data) You need to provide a data frame that is small enough to be (reasonably) pasted on a post, but big enough to reproduce your issue. Let's say, as an example, that you are working with the iris data frame head(iris) #> Sepal.Length Sepal.Width Petal.Length Petal.Width Species #> 1 5.1 3.5 1.4 0.…

[kaijabean]

Hi Shahram,
Check out the cld() (compact letter display) function in the emmeans package. There's more information about that in this past question.

Good luck!