similar to: memory: as.single in .Fortran creates another double

Hi. I did write those functions, and sent them (I thought) to one of the R maintainers to see whether they would be appropriate for inclusion (because I'd seen some requests on the mailing lists). However, I'm happy to post them -- I should have thought of it before. WARNING: I've tested these functions on some data arising in my work and also on the USArrests data that comes with

Christian -- You don't provide enough information (like a call) to answer this. I suspect, though, that you may be subsetting in a way that passes randomForest no data. I'm not aware offhand of an easy way to get this error from randomForest. I tried creating some data superficially similar to yours to see whether something would break if there were only a single value in the variable

Hi, all. I'm trying to cluster 12,500 objects using hclust from package mva. The distance matrix takes up nearly 600 MB. The distance matrix also needs to be copied when being passed to the fortran routine that actually does the clustering (it's modified during the clustering), so that's 1200 MB. I'm actually on a machine with 2.5 GB of memory (and nothing else running), so I

Hi, all. I would like to use "pipe" to run a file through an awk program before scanning (to reduce the amount of data I'll be taking in). I would like to construct the awk program in R, and also to be able to set the awk variable FS, to accommodate different field separators in different files. My problem is that I keep getting the quotes escaped in the string that comes out, and

On Tuesday 14 October 2003 21:05, you wrote: > Hi. I saw your post from earlier this year in which you were soliciting > help on compiling R as a 64-bit application under AIX. We have been having > trouble with the same problem. > > Have you gotten anywhere? > > Thanks for any help. > > Best regards, > > Matthew Wiener > RY84-202 > Applied Computer Science

Take a look at the manual page for "layout". The final example does pretty much what you're asking about (with a scatterplot and histograms, but the idea should be the same). Hope this helps, Matthew Wiener Applied Computer Science & Mathematics Dept. Merck Research Labs Rahway, NJ 07090 732-594-5303 -----Original Message----- From: Adaikalavan Ramasamy [mailto:ramasamy at

A new version of the randomForest package is now available on CRAN. The DESCRIPTION is: Package: randomForest Title: Breiman's random forest for classification and regression Version: 3.4-1 Depends: R (>= 1.5.0) Author: Fortran original by Leo Breiman and Adele Cutler, R port by Andy Liaw and Matthew Wiener. Description: Classification and regression based on a forest of trees using

Hi, all. Last week I posted some code for extracting subtrees of trees in hclust format. Petra Steiner quickly found an example for which the code breaks, and sent it to me. The problem seems to be that I had not considered the possibility of trees with unlabeled nodes. In the new version of f.make.subtree (below), I steal some code from plot.hclust to assign labels if there are none. That

(I'm sending to r-bugs because rpart is one of the recommended packages and is always installed. I'm also sending it directly to Dr. Ripley, as the maintainer.) rpart working as a classifier does not work (produces no splits) when the class indicator has no instances of one of the factor levels, as long as the factor level is not the final level. I have at least a partial fix, which I

(Apologies for cross-posting this job announcement to those on both R-help and S-news.) 2003 SUMMER INTERNSHIP POSITION Domestic United States residents / visitors only. Merck Research Laboratories Rahway, NJ, USA (approx. 30 miles from New York City) 1 position, Ph.D. or Masters student Deadline for Applications: February 14, 2003. Brief Description: Help provide data analytic &

Dear R-help, Can some one tell me if it's possible to have conditional importFrom() in the package NAMESPACE file? Basically I'd like to know if it's possible to make the NAMESPACE file compatible with R 1.9.0 and those 1.8.1 and earlier. The problem is that I want to import cmdscale(), which is in `mva' prior to 1.9.0 but in `stats' post 1.9.0. Any pointer much appreciated!

Please accept my apologies for cross-posting to those subscribed to both R-help and S-news. Also, please direct *all* inquiries to Vladimir Svetnik, the hiring manager. His contact information is below. Thanks, Bill ################################################################ Job description: Computational statistician/biometrician The Biometrics Research Department at Merck Research

Apologies for the cross-posting... Computational statisticians The Biometrics Research Department at Merck Research Laboratories, Merck & Co., Inc. in Rahway, NJ is seeking highly motivated statisticians/data analysts (2 positions) to work in its basic research and drug discovery area. The applicant should have broad expertise in statistics and computer science, with substantial experience

Apology for the cross-post... Andy ============================================== Job description: Computational statistician/medical image analyst The Biometrics Research Department at Merck Research Laboratories, Merck & Co., Inc. in Rahway, NJ is seeking a highly motivated statistician/data analyst to work in its basic research and drug discovery area. The applicant should have broad

Job description: Computational statistician/biometrician The Biometrics Research Department at Merck Research Laboratories, Merck & Co., Inc. in Rahway, NJ, is seeking a highly motivated statistician/data analyst to work in its basic research, drug discovery, preclinical and early clinical development areas. The applicant should have broad expertise in statistical computing. Experience

System: Fedora Core 5 R: 2.2.1 and 2.4.1, complied from source gcc: 4.1.1 I'm trying to pass a single precision array to some legacy code. I ultimately got the code working by ignoring part of the help documentation. The code is actually in Fortran, but the following C program illustrates the problem: $ cat foo.c #include <stdio.h> void foo(float *t) { int *bar;

Dear R-devel, Has anyone played with this? http://www.amd.com/us-en/Processors/DevelopWithAMD/0,,30_2252_2282,00.html <http://www.amd.com/us-en/Processors/DevelopWithAMD/0,,30_2252_2282,00.html> . I'll probably give it a shot... Best, Andy Andy Liaw, PhD Biometrics Research PO Box 2000, RY33-300 Merck Research Labs Rahway, NJ 07065 mailto:andy_liaw@merck.com

If something like the second-order function does not fit your data well, it may well be that the data do not admit a simple structure that you can easily code in C. If you expect the structure of the function to be simple, tell gam() so by specifying a small dimensional basis (via the k= argument in s()). This will probably ease the computational burden. HTH, Andy > -----Original

You can use R objects, such as the return from gam, and the predict.gam function, from C. See the R extensions manual. Reid Huntsinger -----Original Message----- From: RenE J.V. Bertin [mailto:rjvbertin at despammed.com] Sent: Thursday, February 27, 2003 3:42 PM To: Wiener, Matthew Cc: r-help at stat.math.ethz.ch Subject: Re: [despammed] RE: [R] multidimensional function fitting On Thu, 27

Dear R-devel, I recall that there used to be a mechanism to get around the requirement that all objects in a package have associated documentation; i.e., a way to specify a list of objects (mostly functions) that are not considered as part of the package API. Is this still available? I cannot find any mention in R-exts. I realize that the way to go is to have a name space, and eventually