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1. Pseudo standard error function (score: 1): Author: Nitin Jain <nj7w@virginia.edu>; Date: 10 Sep 2003 12:06:21 -0400; Dear list, I was searching for a function `Pseudo standard error (PSE)' in S-Plus. Google search gave me the following S-Plus link: http://www.uni-muenster.de/ZIV/Mitarbeiter/BennoSueselbeck/s-html/h; /archives/html/s-news/2003-09/msg00054.html (8,366 bytes)
2. substituting forward slash (score: 1): Author: Nitin Jain <nj7w@virginia.edu>; Date: Mon, 12 Aug 2002 11:27:35 -0400 (EDT); I wish to substitute forward slash in the following vector (temp). I tried: temp<- c(paste(0:7,"/at",sep="")) rename <- function(ss) unix("sed -e s^/^slash^g", ss, out=T) rename(temp) And it failed.; /archives/html/s-news/2002-08/msg00080.html (7,525 bytes)
3. Summary: substituting forward slash (score: 1): Author: Nitin Jain <nj7w@virginia.edu>; Date: Mon, 12 Aug 2002 12:00:58 -0400 (EDT); Many thanks to Mr. Dunlap, Prof. Ripley and Mr. Dorai Raj for their help. I was using sed without single quotes on solaris machine, and /bin/sh is different in this environment than that of linux. De; /archives/html/s-news/2002-08/msg00082.html (9,042 bytes)
4. Column names in rpart (score: 1): Author: Nitin Jain <nj7w@virginia.edu>; Date: Mon, 12 Aug 2002 13:09:43 -0400 (EDT); Dear S users, I am running rpart (version 3) on solaris. The data frame on which I am applying it to, has some column-names starting with digits, eg:B temp1<- data.frame(matrix(rnorm(1000),nrow=100)); /archives/html/s-news/2002-08/msg00083.html (8,101 bytes)
5. Re: APPLY (score: 1): Author: nj7w@virginia.edu; Date: Wed, 3 Jul 2002 12:39:01 -0400 (EDT); try: new.func _ function(x) { wilcox.test(x[1:3,x[4:6]) } ww <- apply(w,1,new.func) -- Nitin Jain (njain@virginia.edu) Ph. (434)243-9977 (O) PhD Student, UVa, BME (434)244-2844 (R); /archives/html/s-news/2002-07/msg00017.html (7,971 bytes)
6. Rpart questions (score: 1): Author: nj7w@virginia.edu; Date: Fri, 14 Jun 2002 17:04:02 -0400 (EDT); I am using rpart3 (downloaded from www.mayo.edu/hsr/Sfunct.html) Facing two difficulties: 1) I am defining a function: RecPart _ function(Dat, Sam){ Dat _ data.frame(t(as.matrix(Dat))) Classifi _ as; /archives/html/s-news/2002-06/msg00130.html (8,255 bytes)
7. Summary Rpart questions (score: 1): Author: nj7w@virginia.edu; Date: Fri, 14 Jun 2002 18:52:51 -0400 (EDT); Thanks to Dr. Atkinson for solving my querries. The problem was that the frame name should have been unique, and {data.frame} <- modify({data.frame}) was not getting recognized by rpart. Instead it s; /archives/html/s-news/2002-06/msg00131.html (8,847 bytes)
8. Rpart questions (score: 1): Author: nj7w@virginia.edu; Date: Fri, 14 Jun 2002 17:07:33 -0400 (EDT); I am using rpart3 (downloaded from www.mayo.edu/hsr/Sfunct.html) Facing two difficulties: 1) I am defining a function: RecPart _ function(Dat, Sam){ Dat _ data.frame(t(as.matrix(Dat))) Classifi _ as; /archives/html/s-news/2002-06/msg00138.html (7,786 bytes)
9. predict rpart (score: 1): Author: nj7w@virginia.edu; Date: Thu, 20 Jun 2002 09:26:29 -0400 (EDT); Is there any function similar to predict.tree in rpart? I have got the model from rpart, and now I wish to predict the classes of different samples using the result of training data. Thanks. Nitin -; /archives/html/s-news/2002-06/msg00173.html (6,907 bytes)
10. MASS4 questions (score: 1): Author: nj7w@virginia.edu; Date: Thu, 27 Jun 2002 18:04:43 -0400 (EDT); I am using MASS4 package for doing classification. Facing two problems: 1) Have a test data frame, named data (9*3) and wish to calssify it in 3 groups using knn1. The code is: c1 c2 c3 r1 1.0 1.0 1; /archives/html/s-news/2002-06/msg00227.html (9,200 bytes)

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