I keep wondering what screen resolutions and monitors Devon is using as his scans never fit into the browser window, regardless a solution suggested
http://www.jsoftware.com/jwiki/EditingGuidelines/Images#AdaptiveScaling In the meantime, a neatly scanned author's copy is available at Donald McIntyre's web site http://www.mcintyre.me.uk/ > From: Devon McCormick <[email protected]> > > Yes - I found it and put it up on the wiki. I entered and updated the first > section of code - enough to satisfy my curiosity about the mystery functions > "ip" (Inner Product) and "ia" (Indices for Amend). It's at > http://www.jsoftware.com/jwiki/DevonMcCormick/JacobiByMcIntyre . > > I should notify Vector so they can grab it for their archive. > > On Fri, Jan 15, 2010 at 5:32 PM, Devon McCormick wrote: > > > 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 > 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 > > > > > > > -- > 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
