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Re: eigenvector
Posted:
Feb 27, 2008 11:17 PM


dofour <dofour@hotmail.com> wrote in message <16976388.1204166901909.JavaMail.jakarta@nitrogen.mathforum.org>... > Matlab gives the eigenvectors with norm 1, I want the first eigenvector to be [1 1 1]. I don't know how to it from Matlab's eigenvectors > > Thanks
Again, you can't ensure that an eigenvector will be some specific vector, because in general, you can't ensure that that vector is an eigenvector. You can't just decide to pick some vector as an eigenvector, at least not unless your matrix has a specific property, like all of its eigenvalues are equal. And in that case, ANY set of orthogonal vectors will suffice.
Do you know that [1 1 1] is an eigenvector? If so, then it will be scaled to have norm 1. So just rescale the vector. WTP?
John



