I see - I'd only started the article and wanted to jump right it. Fortunately, I probably have a paper copy of that issue of Vector. I'll check this evening.
Thanks... On Fri, Jan 15, 2010 at 5:29 PM, Sherlock, Ric <[email protected]>wrote: > From my reading of this article I don't think that it is Eugene's intention > is for these lines to be executable. He is referring to two lines that are > part of a larger program for calculating Eigenvalues previously published in > another article. They are simply there (along with his detailed explanation > of what they do) to frame the ideas discussed in the rest of article. > > If you want Donald McIntyre's original code then they should be available > in Vector 9, 3, January 1993. Unfortunately there doesn't seem to be an > online version of this but perhaps you have a copy? > > > -----Original Message----- > > From: [email protected] [mailto:programming- > > [email protected]] On Behalf Of Devon McCormick > > Sent: Saturday, 16 January 2010 10:51 > > To: J-programming forum > > Subject: [Jprogramming] "At Play with J" - missing fns? > > > > I opened my newly-received copy of "At Play With J" today to the > > article on > > Jacobi's method. Imagine my dismay at reading the first two lines of J > > code > > which I am unable to run as they depend on (at least) two definitions > > not > > given. In > > > > r=. ((cos,-sin),sin,cos) (ia R)} I > > Q=. q ip |:r [ R=. r ip R ip |:r > > > > what are "ip" and "ia"? Am I missing something here in terms of a > > reference? > > > > > > -- > > Devon McCormick, CFA > > ^me^ at acm. > > org is my > > preferred e-mail > > ---------------------------------------------------------------------- > > For information about J forums see http://www.jsoftware.com/forums.htm > ---------------------------------------------------------------------- > For information about J forums see http://www.jsoftware.com/forums.htm > -- Devon McCormick, CFA ^me^ at acm. org is my preferred e-mail ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
