Thank you Kim-Anh. I was able to reproduce the calculation of the plotvar values.

The use of Pearson corr between the X matrix and the matrix T of the x-scores, is this an invention of the mixOmics team? Is this described elsewhere in the litterature? Or if it’s your invention has this been adopted by others over the years?

Is it really equivalent to the PCA loadings plots? Variables close to each other are correlated, variables in opposite quadrants are inversely correlated and the further away from the origin the more they contribute to the corresponding latent components?

Could you give me the link to the full document that you gave the screenshot of?