But having such large type does not hide the blurs or improve readability. Did you try the advice in the link I provided?
It retains scan resolution but modifies screen resolution. The benefits are crisper type and when you print, the scan resolution is retained. Oleg On Jan 17, 2010, at 4:00 PM, Devon McCormick <[email protected]> wrote: Oleg - in this case, I deliberately used a larger than usual scan to compensate for some blurriness in the scanned image - I don't want to tear up my copy of Vector, so I scanned a double-page spread which is harder to get flat on the scanner. I usually use my old laptop which has a screen resolution of 1920 x 1200 and I scan the images in at 400 dpi, then shrink them to 66% in an attempt to preserve clarity while getting the file sizes down. I've re-scanned some of the blurrier pages and shrunk them to 40% - take a look at http://www.jsoftware.com/jwiki/DevonMcCormick/JacobiByMcIntyre2 to see if it's more readable. Regards, Devon On Sun, Jan 17, 2010 at 5:03 AM, Oleg Kobchenko <[email protected]> wrote: 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 -- 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
