[R] graph in R with grouping letters from the turkey test with agricolae package

[Richard O'Keefe]

> d <- read.table("data.txt", TRUE)
> cor(d[, 3:6])
     VAR1 VAR2 VAR3 VAR4
VAR1    1    1    1    1
VAR2    1    1    1    1
VAR3    1    1    1    1
VAR4    1    1    1    1

VAR1 to VAR4 are, up to linear scaling,
exactly the same variable.  Why is that?


On Wed, 13 Sept 2023 at 07:38, Loop Vinyl <loopvinyl using gmail.com> wrote:

> I would like to produce the attached graph (graph1) with the R package
> agricolae, could someone give me an example with the attached data (data)?
>
> I expect an adapted graph (graph2) with the data (data)
>
> Best regards
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