Hi Vasek, Yes you are right. I have added this functionality in the development version in CVS. You can now use the context menu on any TMatrix or TVector(D) object to invoke the Draw and Print functions with optional arguments. Thanks for this remark. Rene Brun On Fri, 5 Jul 2002, Vaclav Barta wrote: > Hi, > > out of aimless curiosity, I wanted to run subj. (on some spam filtering > results), and since Google pointed me to the example in ROOT, I've > installed it (version 3.03/05) and now I'm trying to wrap my head around > it... > > When I run the example (principal.C), everything seems to work fine > until I get a ROOT Object Browser window with the Covariance Matrix, > Eigenvalue vector, Eigenvector Matrix, Mean value vector, Sigma value > vector and pca_e objects. I can double-click pca_e and get a graph of > eigenvalues - but when I double-click any other object (I'm especially > interested in the eigenvector matrix), nothing happens... The > Eigenvector Matrix has a local menu, but no item in it shows the matrix > as a matrix - it either shows summary information (the Inspect command), > or asks for some option (the DrawClone command). > > I get a feeling that I'm not using ROOT as intended - but is it really > so unreasonable to consider the eigenvectors being a part of the result > of PCA? How do I get to see them? > > Bye > Vasek >
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