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1. Re: "cumsum" for matrices (score: 1): Author: jsv@stat.ohio-state.edu; Date: Fri, 20 Jan 2006 21:40:05 -0500 (EST); What your cumsumA calculates is array(cumsum(as.numeric(A)),c(3,3,3)) is this what you were looking for? _________________________________________; /archives/html/s-news/2006-01/msg00064.html (8,730 bytes)
2. Re: Removing 0's (score: 1): Author: jsv@stat.ohio-state.edu; Date: Mon, 21 Nov 2005 08:51:15 -0500 (EST); zeros.trim <- function(x){ non.zeros <- which(!(x==0)) x[non.zeros[1]:non.zeros[length(non.zeros)]]} _______________________________________________; /archives/html/s-news/2005-11/msg00053.html (9,324 bytes)
3. Re: matrix manipulation question (score: 1): Author: jsv@stat.ohio-state.edu; Date: Wed, 20 Jul 2005 12:21:08 -0400 (EDT); The only problem is if there is more than one "1" in a row: Here's the same idea, with the fix: leadin1 <- function(mat=start.matrix){ nr <- nrow(mat) nc <- ncol(mat) pat <- rep(c(1,0),nr) terminals; /archives/html/s-news/2005-07/msg00112.html (12,919 bytes)
4. svd for large array (score: 1): Author: jsv@stat.ohio-state.edu; Date: Fri, 22 Jul 2005 10:40:16 -0400 (EDT); Dear listers, I'm using Splus 7.0 on a Windows XP with 4Gb memory. I would like to perform an svd on a rectangular array where one dimension is very large (around 30K) and the other is relatively sma; /archives/html/s-news/2005-07/msg00118.html (7,394 bytes)
5. Re: svd for large array (score: 1): Author: jsv@stat.ohio-state.edu; Date: Sat, 23 Jul 2005 18:46:56 -0400 (EDT); Dear Prof. Ripley: Here is what I get Problem in 1:ll: Cannot create - data would have length greater than 536 870911 (.Machine$integer.max/sizeof(integer)) Use traceback() to see the call stack 10:; /archives/html/s-news/2005-07/msg00125.html (11,984 bytes)
6. Summary: svd for large array (score: 1): Author: jsv@stat.ohio-state.edu; Date: Sun, 24 Jul 2005 11:54:02 -0400 (EDT); Special thanks to Bob Pruzek, whose success on a small Apple G4 prompted me to try this in R. [1] "Sun Jul 24 11:28:21 2005" [1] "Sun Jul 24 11:28:27 2005" [1] 30000 100 Works like a charm in 6 secon; /archives/html/s-news/2005-07/msg00127.html (15,396 bytes)
7. Y1.9K ? (score: 1): Author: jsv@stat.ohio-state.edu; Date: Wed, 19 Jan 2005 19:43:51 -0500 (EST); t; /archives/html/s-news/2005-01/msg00100.html (6,906 bytes)
8. Re: constructing a symmetric matrix (score: 1): Author: "Joseph S. Verducci" <jsv@stat.ohio-state.edu>; Date: Mon, 18 Oct 2004 10:18:16 -0400; x[lower.tri(x)] <- t(x)[lower.tri(x)] ______________________________; /archives/html/s-news/2004-10/msg00077.html (9,651 bytes)
9. What happened to "optim" ? (score: 1): Author: "Joseph S. Verducci" <jsv@stat.ohio-state.edu>; Date: Tue, 7 Oct 2003 15:30:28 -0400 (EDT); I find it in R, but not in Splus. Is there an Splus version available? I'm using S-Plus 6.0 Release 2 for Windows on Windows XP.; /archives/html/s-news/2003-10/msg00060.html (6,716 bytes)
10. Summary: What happened to "optim" ? (score: 1): Author: "Joseph S. Verducci" <jsv@stat.ohio-state.edu>; Date: Tue, 7 Oct 2003 16:53:50 -0400 (EDT); For some reason or other, my "Mass" (with only one cap) did not have "optim". I downloaded the update to "MASS" available at http://www.stats.ox.ac.uk/pub/MASS4/Software.html#Windows by clicking the; /archives/html/s-news/2003-10/msg00062.html (9,330 bytes)
11. pmvnorm (score: 1): Author: "Joseph S. Verducci" <jsv@stat.ohio-state.edu>; Date: Wed, 16 Jul 2003 14:07:41 -0400 (EDT); is currently limited in Windows 6.0 to dimension 2 for general covariance matrices. does anyone have a reasonable approximate method available in Splus for dimension > 2?; /archives/html/s-news/2003-07/msg00116.html (6,346 bytes)
12. Summary: pmvnorm (score: 1): Author: "Joseph S. Verducci" <jsv@stat.ohio-state.edu>; Date: Thu, 17 Jul 2003 09:18:53 -0400 (EDT); I received 3 responses to my request for a pmvnorm like function that might approximate mvn orthant probabilities for general covariance and general dimension: 1) Eric Zivot -- As part of the next re; /archives/html/s-news/2003-07/msg00124.html (7,650 bytes)
13. problem with lme (score: 1): Author: "Joseph S. Verducci" <jsv@stat.ohio-state.edu>; Date: Wed, 23 Jul 2003 16:13:01 -0400 (EDT); e; /archives/html/s-news/2003-07/msg00168.html (6,503 bytes)
14. Re: Clustering (score: 1): Author: "Joseph S. Verducci" <jsv@stat.ohio-state.edu>; Date: Mon, 30 Jun 2003 15:19:04 -0400 (EDT); Here's a great way: Read the technical report "Comparing Clusterings" found at http://www.stat.washington.edu/mmp/ Joe __________________________ On Mon, 30 Jun 2003, Bruce Luxon wrote:; /archives/html/s-news/2003-06/msg00214.html (7,901 bytes)
15. height component of an agnes object (score: 1): Author: "Joseph S. Verducci" <jsv@stat.ohio-state.edu>; Date: Tue, 12 Mar 2002 12:24:22 -0500 (EST); I'm running Version 6.0 Release 1 for Sun SPARC, SunOS 5.6 : 2000 There seems to be a problem with the "height" component of some agnes objects. Here is an example: We start with a (non-negative defi; /archives/html/s-news/2002-03/msg00085.html (8,365 bytes)
16. Re: height component of an agnes object (score: 1): Author: "Joseph S. Verducci" <jsv@stat.ohio-state.edu>; Date: Tue, 12 Mar 2002 13:13:20 -0500 (EST); question withdrawn the problem is my idiocy mean(group2.dmat[1,19],group2.dmat[5,19]) should have been mean(c(group2.dmat[1,19],group2.dmat[5,19]) my apologies JV ____________________________ On Tue,; /archives/html/s-news/2002-03/msg00086.html (10,218 bytes)
17. Genetic Algorithm (score: 1): Author: "Joseph S. Verducci" <jsv@stat.ohio-state.edu>; Date: Wed, 26 Dec 2001 10:28:12 -0500 (EST); Along the thread of undocumented assets, I've come across "Genetic Algorithm" in the Index of Splus 6.0 Release 2 for Windows. This entry describes seven inputs to the algorithm, but there is no refe; /archives/html/s-news/2001-12/msg00184.html (6,701 bytes)
18. Summary Genetic Algorithm (score: 1): Author: "Joseph S. Verducci" <jsv@stat.ohio-state.edu>; Date: Wed, 26 Dec 2001 14:54:20 -0500 (EST); Thanks to Chuck Taylor from Insightful for solving the GA help mystery. According to Chuck, "What you are seeing is the GUI help page for the dialog reached from the menus as follows: Statistics | Re; /archives/html/s-news/2001-12/msg00185.html (8,649 bytes)
19. abusing seq (score: 1): Author: "Joseph S. Verducci" <jsv@stat.ohio-state.edu>; Date: Sun, 29 Jul 2001 13:01:36 -0400 (EDT); Dear Sers: In a blatant abuse of an innocent and well-respected function, I tried the following command: seq(from=2,by=c(1,2),length=20) which resulted in [1] 2 4 4 8 6 12 8 16 10 20 12 24 14 28 16 3; /archives/html/s-news/2001-07/msg00231.html (6,989 bytes)
20. Re: Bagging & Boosting (Re: Regression Trees) (score: 1): Author: "Joseph S. Verducci" <jsv@stat.ohio-state.edu>; Date: Thu, 5 Apr 2001 13:32:38 -0400 (EDT); A good source for references is Leo Brieman's website http://www.stat.Berkeley.EDU/users/breiman/ which has several papers on the topic _______________________________________________________; /archives/html/s-news/2001-04/msg00062.html (9,953 bytes)

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