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Stoney’s Zone Thoughts about stuff Home About Me Archives Links Switcher The Even-more Complete List of Hex Words December 24th, 2009 Comments Off on The Even-more Complete List of Hex Words I realized that I was being insufficiently lee7, so I added S, T, and Z, converting into 5, 7, and 2. This produced a much longer list, of course. Read more… Computers , Software The Complete List of Hex Words December 18th, 2009 Comments Off on The Complete List of Hex Words While converting some code to 64-bit on Snow Leopard, I discovered that character literals are ints, so I couldn’t use them for 8-byte longs. The alternative is readable hex constants. Read more… Computers , Software 2D Matrix Decomposition July 10th, 2009 Comments Off on 2D Matrix Decomposition This demonstrates the polar decomposition of 2D matrices into their angle, scale, and shear components. The polarDecomp algorithm is taken from Shoemake & Duff “ Matrix Animation and Polar Decomposition “, 1992. Read more… Computer Graphics , Mathematica Mirroring git respositories to DreamHost June 11th, 2009 Comments Off on Mirroring git respositories to DreamHost Casper Fabricius has a nice shell script for creating new git repositories on DreamHost. Unfortunately, this works only for creating new repositories. Read more… Software backup , bash , dreamhost , git , script , shell Defining new format wrappers in Mathematica June 3rd, 2009 Comments Off on Defining new format wrappers in Mathematica One problem I had with the expression-to-C converter is that CForm converts negations of terms into a negation of parenthesized terms. Read more… Languages , Mathematica , Software Converting symbolic Mathematica expressions to C code June 2nd, 2009 Comments Off on Converting symbolic Mathematica expressions to C code I frequently use Mathematica to rearrange or solve symbolic equations to use in C++ programs. While Mathematica is quite powerful for that, it has no facility to hoist common subexpressions into variables. Read more… Languages , Mathematica , Software Adding a keyboard shortcut to Mathematica V7 December 29th, 2008 Comments Off on Adding a keyboard shortcut to Mathematica V7 (updated 2009-03-23 to add the backslashes that disappeared between my blog editor and WordPress) In Mathematica, typing index brackets is clumsy, as one has to type esc-[[-esc then esc-]]-esc. I found a way to modify the Edit menu to add a shortcut for this. Read more… Languages , Mathematica , Software Pixel-perfect Graphics, Revisited November 25th, 2008 Comments Off on Pixel-perfect Graphics, Revisited Mathematica 7 introduces a new Image function that eliminates all the hassle previously necessary to create and export pixel-perfect raster images. Read more… Computer Graphics , Languages , Mathematica , Software What is a sampling test image? September 8th, 2008 Comments Off on What is a sampling test image? I was asked what the purpose is of the test image in my previous post , and why the alpha was set to 0.01 rather than 0 in alternating pixels. Read more… Computer Graphics , Computers , Software Exporting Pixel-Perfect Graphics in Mathematica September 2nd, 2008 Comments Off on Exporting Pixel-Perfect Graphics in Mathematica I keep having to figure out how to export pixel-perfect raster images from Mathematica, which I use for test images with my software. I found that it’s simpler to use ArrayPlot than Raster now, so I’m documenting this for my future use (and any one else’s). Read more… Computer Graphics , Languages , Mathematica , Software Older Entries RSS feed Google Youdao Xian Guo Zhua Xia My Yahoo! newsgator Bloglines iNezha Search for: Pages About Me Archives Links Features Unitarian Jokes Photo Gallery Genealogy Eno’s Oblique Strategies Building Our House My web sites First Parish in Concord Concord CROP FUUCSL Concord Area Humanists Favorite Blogs Kevin Ballard Boing Boing Rafe Colburn 43 Folders Daring Fireball Pharyngula Bad Astronomy Improbable Research The Dilbert Blog Ars Technica Gizmodo Cool Tools 27B Stroke 6 Stuff I Like Schneier on Security I Can Has Cheezburger? Web Comics Abstruse Goose Slow Wave xkcd Cetic – The Comic The Joy of Tech Meta Log in Entries RSS Comments RSS WordPress.org Categories Blogging Computer Graphics Computers Family Geneaolgy Humor Languages Macintosh Mathematica Music Musings Reviews Servers Software Uncategorized Web Design Archives December 2009 July 2009 June 2009 December 2008 November 2008 September 2008 March 2008 January 2008 December 2007 October 2007 August 2007 July 2007 January 2007 July 2006 June 2006 December 2005 November 2005 September 2005 August 2005 July 2005 June 2005 May 2005 April 2005 February 2005 September 2004 March 2004 May 2003 October 2002 Top WordPress Copyright © 2002-2018 Stoney’s Zone Theme by mg12 . Valid XHTML 1.1 and CSS 3 ....