Hi all,

I guess, that it is an easy issue, but I can not figure out how to apply rotatefactors on the SCORES matrix resulting from a previous PCA:

(1) I run a PCA following:

[wcoeff,score] = pca(zscore(DataSet))

(2) I would like to rotate my principal components using rotatefactors:

[NewCoeff,TransfMatrix] = rotatefactors(wcoeff);

NewCoeff should give the new coordinates of the variables on the varimax-rotated components.

My question is: How can I compute the coordinates ‘NewScores’ of my observations on the new components? My idea is to plot them on a biplot and on an other scatter-plot where each axis is a component.
I guess that there is something easy like:

NewScores = score * TransfMatrix

Am I right?

RomainHi all,

I guess, that it is an easy issue, but I can not figure out how to apply rotatefactors on the SCORES matrix resulting from a previous PCA:

(1) I run a PCA following:

[wcoeff,score] = pca(zscore(DataSet))

(2) I would like to rotate my principal components using rotatefactors:

[NewCoeff,TransfMatrix] = rotatefactors(wcoeff);

NewCoeff should give the new coordinates of the variables on the varimax-rotated components.

My question is: How can I compute the coordinates ‘NewScores’ of my observations on the new components? My idea is to plot them on a biplot and on an other scatter-plot where each axis is a component.
I guess that there is something easy like:

NewScores = score * TransfMatrix

Am I right?

Romain Hi all,

I guess, that it is an easy issue, but I can not figure out how to apply rotatefactors on the SCORES matrix resulting from a previous PCA:

(1) I run a PCA following:

[wcoeff,score] = pca(zscore(DataSet))

(2) I would like to rotate my principal components using rotatefactors:

[NewCoeff,TransfMatrix] = rotatefactors(wcoeff);

NewCoeff should give the new coordinates of the variables on the varimax-rotated components.

My question is: How can I compute the coordinates ‘NewScores’ of my observations on the new components? My idea is to plot them on a biplot and on an other scatter-plot where each axis is a component.
I guess that there is something easy like:

NewScores = score * TransfMatrix

Am I right?

Romain pca, rotatefactors, scores MATLAB Answers — New Questions

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