[adegenet-forum] DAPC axes

[Cathy Bouffartigue]

Hi Said,

DAPC is a PCA on which you do a discriminant analysis. So the PCA gives you PCs (axes) on which you apply a discriminant analysis (LDs axes). The basic plot of the DAPC is the result of the discriminant analyses on the PCs. Therefore the axes of the basic plot are LDs
Good luck

Cathy

De : adegenet-forum <adegenet-forum-bounces at lists.r-forge.r-project.org> De la part de Said D.
Envoyé : mercredi 30 septembre 2020 10:29
À : adegenet-forum at lists.r-forge.r-project.org
Objet : [adegenet-forum] DAPC axes

Hi everyone,
I googled a lot (Maybe I was not lucky enough) but I could not find a real explanation out the axes of the DAPC scatter plot.
Should I call them PC1 and PC2 or LD1 and LD2?
Here they call the axes LD1 and LD2
https://grunwaldlab.github.io/Population_Genetics_in_R/clustering_plot.html

It is also a pity that the original DAPC scatter plot is not showing the scale.
Thank you.
Said


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