 

Good afternoon Mr. Brewer

 

I am Madelen Giraldo a Master´s student at University Nacional in Colombia.
I am new using R and I was looking how to use Adonis for a block/split plot
design. I found the approximation that you wrote to Beth and others about
how to use it for repeated-measures and simple split-plot design. However, I
don’t know how to include the terms in the formula, because you used a
repeated-measured design for the example.

 

My design include

 

Block: 3 levels

 

 

Factors

 

·         Glyphosate: 2 levesl

·         Rotation: 2 levels (the rotation systems are my principal factor –
whole-plot)

·         Time: 2 levels 

 

 

I don’t know how to include this in the formulates that you used in the
example:

 

Adonis(Speciesdata ~ betweensubtrtmt * time + plot, data = envfactors,

strata = plot)

 

Nested.npmanova(speciesdata ~ betweensubtrtmnt + plot; data = envfactors)

 

 

I really would appreciate any help

 

Thank you so much

 

Madelen Giraldo

Animal Husbender

Master´s student in Soils science


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