Welcome the J Forum, Erik! There is a LAPACK addon for J.
load 'math/lapack' load 'math/lapack/geev' ]R=: 3 3 $ 1 0.5 0.2 0.5 1 0.3 0.2 0.3 1 NB. A 3x3 correlation matrix geev_jlapack_ R ┌─────────────────────────────┬─────────────────────────┬─────────────────────────────┐ │_0.607593 _0.650369 _0.455907│1.68391 0.487161 0.828931│_0.607593 _0.650369 _0.455907│ │_0.646557 0.738394 _0.191674│ │_0.646557 0.738394 _0.191674│ │_0.461298 _0.17831 0.869143│ │_0.461298 _0.17831 0.869143│ └─────────────────────────────┴─────────────────────────┴─────────────────────────────┘ Check the J wiki and Help->Studio->Labs for further information. Esa -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of "Papp Erik Tamás" Sent: 18. marraskuuta 2011 11:26 To: [email protected] Subject: [Jprogramming] maximal eigenvector of a 4x4 real-symmetric matrix Dear Forum, I am a Newbies in J programming. I woild like to write a J program for calculating eigenvalues and eigenvector of a symmetric matrix. How can write a J program to find the maximal eigenvector of a 4x4 real-symmetric matrix? Can someone help me or give me a good advice? Sincerely yours, Erik ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
