[R] denoting post-hoc test differences using letters

From: Adrienne Keller <adrienne.keller_at_umontana.edu>
Date: Mon, 23 May 2011 10:40:35 -0600

Is there code in R to automatically assign letters to different groups that are found to be statistically significant using a post-hoc test following an ANOVA? For example, let's say I found that relative rates of tree growth were statistically significant between tree species using an ANOVA and then I ran a TukeyHSD post-hoc test to determine which species were statistically different from one another. I can manually assign different letters for each species that is different from another, but is there code to do this automatically in R. I would like to add these letters to a table, but have many different ANOVAs and doing this manually will be quite time consuming.



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https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code. Received on Mon 23 May 2011 - 17:35:28 GMT

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