similar to: Web-application using R

Basically, the `Detail' section of ?tune says it all: Details: As performance measure, the classification error is used for classification, and the mean squared error for regression. ... Andy > From: Tae-Hoon Chung > > Hi, all; > > Basically, the subject contains the all information I need to know. > In e1071 library, there are functions to tune parameters.

Hi, all. Something strange happened to my ESS. I use Mac OS X. When R is used in stand alone mode, it recognizes external libraries like "affy", "e1071" etc. However, when R is invoked through ESS in Emacs, it produces errors like: Error in library(affy) : There is no package called 'affy' Interestingly, I remember I successfully used these libraries through ESS in

Hello. By way of background, I am running out of memory when attempting to normalize the data from 160 affymetrix microarrays using justRMA (from the affy package). This is despite making 6 gigabytes of swap space available on our sgi irix machine (which has 2 gigabytes of ram). I have seen in various discussions statements such as "you will need at least 6 gigabytes of memory to normalize

Hi, all; I got an unusual error while using mclust library 2.1-7 on R 2.0.1. When I tried to run Mclust(rnorm(100)), I got segmentation fault error. Does anyone know what causes this problem? I came across the same problem even when I tried to run the example shown in Mclust help using iris data. Thanks in advance, Tae-Hoon Chung -------------------------------------------------- Tae-Hoon Chung

Hi, All; I have a question. In R, what is the best way to make R idle for a while and try something again later? For example, suppose there is an R job which accesses a file that may be shared with other active jobs. So when the file is being accessed by other job, your job will not be able to access the file and your job will crash because of that. To avoid this, you want your job to try to

Hi, All; Suppose I have a class 'dat' such that setClass('dat', representation (.version='character', x='numeric', y='numeric')). If I want to make a method that changes the .version slot of 'dat' class in a way like set.version(d) <- '0.2' when d is an object of 'dat' class, how can I do this? Thanks in advance. Tae-Hoon

Is there any requirement for TclTk support for R? When I tried to call the tcltk library, it failed with the following message: > library(tcltk) Error in firstlib(which.lib.loc, package) : Tcl/Tk support is not available on this system Error in library(tcltk) : .First.lib failed for 'tcltk' The system information is as follows: Linux osirus.tgen.org 2.6.9-42.0.10.ELsmp #1

Hi, All; When I generate a "special" paper postscript image larger than "a4" or "letter" using R, I can only see one-page portion of all image, of course. What will be the simple solution for this? Is there any way I can set the bounding box information on the image? Or any other suggestions? Thanks in advance; Tae-Hoon Chung

I use CGIwithR to run a website that executes R scripts under cgi-bin. Are there any projects that implement a work frame using R similar to Java's servlet engine? Initialization times are hurting. Can initialize once process and treat all web requests as threads of this process? Any help with this subject is greatly appreciated.

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I'm trying to select a subset of a dataframe while dropping some factors. While the dataset gets smaller all Factor levels remain and I need to get rid of them. Strangely enough, I am almost certain that the same code on the same data worked OK earlier today - and it is not the first time that I'm not able to replicate earlier results with this command (I know, I might just be going

Happy new year to all; A few days ago, I posted similar problem. At that time, I found out that our R program had been 32-bit compiled, not 64-bit compiled. So the R program has been re-installed in 64-bit and run the same job, reading in 150 Affymetrix U133A v2 CEL files and perform dChip processing. However, the memory problem happened again. Since the amount of physical memory is 64GB, I think

Hi, All; I tried to use library mclust in 64-bit compiled R 2.0.1 but failed. Installation went smoothly without any warning or error. However, when I tried to use them with the following simple code, it crashed. Library(mclust) Dat <- c(rnorm(20, mean=0, sd=0.2), rnorm(30, mean=1, sd=0.2)) Ind <- Mclust(dat, 1, 5)$classification cbind(Dat, Ind) The error message was:

Hi, all; I know there has been a lot of discussions on memory usage in R. However, I have some odd situation here. Basically, I have a rare opportunity to run R in a system with 64GB memory without any limit on memory usage for any person or process. However, I encountered the memory problem error message like this: Error: cannot allocate vector of size 594075 Kb I got this error message while

I have released the new module Statistics::R and need some feedback of it's status. This will permit the control of the the R (R-project) interpreter through Perl in different architectures and OS. You can for example, start only one instance of the R interpreter and have different Perl process accessing it. What will save the initiation time of R and memory. Soo, I will appreciate if some

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Hi, All; Suppose I have a class 'dat' such that setClass('dat', representation (.version='character', x='numeric', y='numeric')). If I want to make a method that changes the .version slot of 'dat' class in a way like set.version(d) <- '0.2' when d is an object of 'dat' class, how can I do this? Thanks in advance. Tae-Hoon

Hi, Is there any possible way to connect to VB, VC++, Delphi, Python, etc... to R? I am trying to put some nice GUI using something like VB and use R as a back end for computations. I search through the FAQ and help archive, but could not find any. I am willing to look at any tools on Sun/Solaris environment as well (Like C or Python or Perl). If anyone can share some examples, pls let me

Hi, I installed SJava 0.66-1 on my linux RH 7.2 machine. I am using R-1.7.1. I set LD_LIBRARY_PATH up then called library(SJava) and it was fine. But when I called .JavaInit(), I got weird error that states it could not find java/lang/Hashtable. The session is below and shows my java configuration. I am using j2sdk1.4.2_01 from Sun. Thank you very much. Weiming Zhang > .javaConfig

Colleagues, How i can solve this error when i install SJava package Thanks ---------------- R CMD INSTALL -c /usr/local/lib/R/SJava_0.69-0.tar.gz * installing to library ?/usr/local/lib/R/site-library? * installing *source* package ?SJava? ... checking for java... /usr/lib/jvm/java-6-sun/bin/java Java VM /usr/lib/jvm/java-6-sun/bin/java checking for javah... /usr/lib/jvm/java-6-sun/bin/javah