The addon documentation may help get you started. http://www.jsoftware.com/jwiki/Addons/math/lapack
2011/11/23 "Papp Erik Tamás" <[email protected]>: > Dear Forum, > > How can install and run/use the LAPACK? > I tried, but got the folloving error messages: > > load 'math/lapack' > |file name error: script > | 0!:0 y[4!:55<'y' > > load 'math/lapack/geev' > |file name error: script > | 0!:0 y[4!:55<'y' > > Thank you in advance, > > Erik > > > ----- Eredeti levél (Original Message) ----- > Feladó: Lippu Esa <[email protected]> > Dátum: Péntek, November 18, 2011 10:56 de > Tárgy: Re: [Jprogramming] maximal eigenvector of a 4x4 real-symmetric matrix > Címzett: Programming forum <[email protected]> > >> 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:programming- >> [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 > ---------------------------------------------------------------------- > For information about J forums see http://www.jsoftware.com/forums.htm ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
