similar to: c-c problem when R compiled with pthread

Dear R-help, Has anyone tried linking R against the Intel Math Kernel Library on (obviously) Intel architecture? Since MKL claimed to provide optimized BLAS and Lapack, I thought it might be possible to compile R against it w/o too much trouble. My first naive try under Linux (Mandrake 7.1), using R-patched dated Jan. 4, 2002: ./configure --with-blas=/usr/local/intel/mkl/LIB/libmkli32_p3.a

(Sorry for the cross-post--- I wasn't sure which list is more appropriate...) Hi everyone, I've run into segfaults when using my randomForest package on large dataset (e.g., 100 x 15200) and large number of trees (e.g., ntree=7000 and mtry=3000). I'm wondering if anyone can give me some hints on where to look for the problem. The randomForest package mainly consists of two things:

(Sorry for the cross-post--- I wasn't sure which list is more appropriate...) Hi everyone, I've run into segfaults when using my randomForest package on large dataset (e.g., 100 x 15200) and large number of trees (e.g., ntree=7000 and mtry=3000). I'm wondering if anyone can give me some hints on where to look for the problem. The randomForest package mainly consists of two things:

Hi all, There is now a package available on CRAN that provides an R interface to Leo Breiman's random forest classifier. Basically, random forest does the following: 1. Select ntree, the number of trees to grow, and mtry, a number no larger than number of variables. 2. For i = 1 to ntree: 3. Draw a bootstrap sample from the data. Call those not in the bootstrap sample the

Hi all, There is now a package available on CRAN that provides an R interface to Leo Breiman's random forest classifier. Basically, random forest does the following: 1. Select ntree, the number of trees to grow, and mtry, a number no larger than number of variables. 2. For i = 1 to ntree: 3. Draw a bootstrap sample from the data. Call those not in the bootstrap sample the

Dear R-help, I'm having problem creating a dll using Rcmd SHLIB with R-1.3.1 on WinNT4: C:\TEMP>Rcmd SHLIB tryf.o make[1]: `libR.a' is up to date. make: *** No rule to make target `'tryf.o', needed by `tryf.a'. Stop. C:\TEMP>Rcmd SHLIB tryf.f make[1]: `libR.a' is up to date. make: *** No rule to make target `'tryf.o', needed by `tryf.a'. Stop. I

Dear R-help, I'm having problem creating a dll using Rcmd SHLIB with R-1.3.1 on WinNT4: C:\TEMP>Rcmd SHLIB tryf.o make[1]: `libR.a' is up to date. make: *** No rule to make target `'tryf.o', needed by `tryf.a'. Stop. C:\TEMP>Rcmd SHLIB tryf.f make[1]: `libR.a' is up to date. make: *** No rule to make target `'tryf.o', needed by `tryf.a'. Stop. I

Hi all, I've compiled R-1.4.0 on my NT box with link against ATLAS. It has passed all the Rcmd CHECK that I could run. If there's sufficient interest, I can make the SetupR.exe available (on CRAN?). Just drop me a note if you're interested. Note the following: o I can only connect thru 56K dial-up until Jan. 2, 2002, so unless there's overwhelming demand, I won't attempt

I know I should not mix base plotting functions with grid/lattice functions, but I have used a "quick-and-dirty" trick of par(new=T) in the past for annotating a trellis-drawn graph in various versions of S-PLUS. The sequence goes something like this: > windows(width = 5, height = 5, pointsize = 10) # open up the device > xyplot(y ~ x) > par(new=T) > xyplot(y2 ~ x) >

The problem is known and is in grid/lattice. That starts up a blank page before the first plot. It is not related to 1.3.1/1.4.0, but to grid updates. Paul Murrell has been informed! On Fri, 4 Jan 2002 andy_liaw@merck.com wrote: > Dear all, > > I'm running into a rather strange problem that hasn't happened before > R-1.4.0. If I make a plot on a window() device, and use

Dear all, I'm running into a rather strange problem that hasn't happened before R-1.4.0. If I make a plot on a window() device, and use the menu to either save to a metafile or copy to clipboard as a metafile, I get an error message in the R console: Error: A metafile can store only one figure. This only happens when the lattice (and grid) package is attached, regardless of whether the

Dear R-devel, I grabbed 1.7.0 beta from today. "make check" still fails at base-Ex.R. The last few lines of the output are: > lsf.str()#- how do the functions look like which I am using? Error in exists(nam <- nms[i], envir = envir, mode = mode) : F used instead of FALSE Execution halted Looks like the same problem as before, but at a different place. Mandrake Linux

With the same system configuration (WinNT4 SP6 and 1.7.0), I get such a Dr Watson crash each time I try to use the Change dir... command in the File menu of Rgui.exe. I doesn't seems to happen if I do this immediately after starting R but well if I already did some computation. I don't have any problem by using directly setwd(). At 12:10 23/04/03, you wrote: >Date: Tue, 22 Apr 2003

Dear R-devel, Last week I got several responses to my question about debugging segfaults in my code (original post below). After I changed the S_alloc() calls to Calloc()/Free(), the symptom was gone, but I was told to keep looking. So I did: o Switched to Calloc/Free. Electric Fence did not find any problem. o Put assert(index < bound); assert(index >=0); everywhere in the C routine

Dear R-devel, I'm encountering a strange problem in a Rd file that I'm working on. In the "Value" section, I have something like: ===================== \value{ An object of class \code{randomForest}, which is a list with the following components: \item{call}{the original call to \code{randomForest}} ... For classification problem, the following are also included:

This is interesting: The crash does not happen if I run Rgui in MDI mode. The crash seemed to only occur in SDI. Andy =========================================================== For the record: Under Rgui, using the menu "File / Channge dir..." to change to a network drive crashes rgui. The crash happens if I browse to a folder on a mapped drive. I.e., if I type in

Dear R-help, This one is probably a piece of cake for regexp masters. I'd like to split a character vector (for simplicity, say of length one for now) that contains fields that are delimited by arbitrary number of white spaces (e.g., " a b c "). How do I get the character vector that contain the fields? In the example I gave, I've tried: > strsplit(" a b c

Dear R-help, Yes, I do know about the auto-loading feature. My question is more complicated than that: Suppose I loaded a package (e.g., e1071) and created an object of certain class (e.g., svm), for which there is a print method in the package to hide things that the user may not need to see (e.g., large vectors or matrices needed by methods such as predict). If the next time I started R, I

Dear R-help, Has anyone notice the problem that, on Windows (NT and XP), when printing a graph using the "File -> Print..." menu in the graphics window to print the graph, that line width seemed to be ignored in the printed output? For example, if I make a plot with plot(1:10, type="l", lwd=5), it looks right on screen, but when printed out using the menu, it looks like

Hi all, I managed to at least compile R-patched (2002-01-08) against MKL 5.1 (not beta). The release notes for MKL said that the libraries are threaded, and the test codes needed to be linked against the pthread library. Therefore I added -lpthread flag in config.site for R-patched, and the compile went through. However, when I did make check, it choked on a call to La.eigen, complaining that