I am quite a begginner with ggplot and partners, so I apologize if the question is very basic.
I'd like to use fviz_pca_biplot to plot results from a PCA but I can't manage to set parameters as wanted.
Here is what I am coding:
fviz_pca_biplot(correlatives.pca, repel=TRUE, # Individuals geom.ind = "point", fill.ind = habillage$g_sp, pointshape = 21 , pointsize = 2, alpha.ind=0.4, # Variables alpha.var =1, col.var = "contrib", legend.title = list(fill = "Species", color = "Contrib"))
And what I get:
It is almost what I want except I'd like to remove strokes of points, and mean group points.