similar to: Linux Standalone Server Suggestions for R

Dear R users, I have a data frame with a few thousand rows and several hundred numeric columns (plus a date column). For each row (day), I want to assign +/- 1 to the highest X absolute values, 0 to the other values, and save all that in a separate data frame. I have a working solution (below), however I find it rather slow. Is there something I could do to increase the speed? (The code is

hi. i'm hitting a wall each time i try to format a 3 terabyte partition. i'm able to create the partition using parted but whenever i try to create a 3 terabyte xfs or jfs or ext3 filesystem, the mounted filesystem created is only 1 terabyte. i tried centos x86 and x86_64 4.0 but i always hit a 1 terabyte limit. please help.

Hello, I am writing a program that decodes Ogg Vorbis and output to the hardware. I followed the decoding examples and got the bytes ready for output. I am looking for an audio output library on Windows. So far, I tried at DirectSound but it is quite complicated and requires lots of set up. I have several questions: 1. Does Libao work on Windows? 2. And Is there a simpler audio output library?

Hello, I am trying to write a Ogg player that plays the Ogg stream sending from the icecast server (similiar to WInamp). So the player needs to read the bits and send them to the sound card. So I tried to use the SDL library to do this. However, sample rate changes in the Vorbis stream which disrupt SDL playing. I wonder what the proper way to handle sample rate changes in a Vorbis stream is.

I noticed that btrfs fi defrag -c<method> can''t be used to compress files unless they are fragmented. This patch corrects the problem, by informing should_defrag_range if compression is enabled, and skipping tests for extent and adjacent extents if it is. Andrew Mahone (1): btrfs: ignore unfragmented file checks in defrag when compression enabled fs/btrfs/ioctl.c | 10

Hi: I have encountered problems with imodwt and universal.thresh.modwt and cannot find any reference in R Search. Hope someone can give me some ideas: Starting with modwt.la8 <- modwt(xdata, "la8", n.level=6) <-- this seems to work fine (1) ydata <- imodwt(modwt.la8) will always give ydata as numeric(0) (no values) instead of being a time series data with

Dear all, I get a strange error when I find polychoric correlations with the ML method, which I have been able to reproduce using randomly-generated data. What is wrong? I realize that the data that I generated randomly is a bit strange, but it is the only way that I duplicate the error message. > n<-100 > test.x<-rnorm(n, mean=0, sd=1) > test.c<-test.x + rnorm(n, mean=0,

On Fri, 07 Jan 2005 17:05:59 +0000 David Woodhouse <dwmw2@infradead.org> wrote: > On Sat, 2004-12-18 at 08:50 +0100, Andi Kleen wrote: > > It's not really an oops, just a warning that stack space got quiet > > tight. > > > > The problem seems to be that the br netfilter code is nesting far too > > deeply and recursing several times. Looks like a design

Hello all, Trying to get this piece of code to work on my data set. It is from http://www.itc.nl/personal/rossiter. logit.roc <- function(model, steps=100) { field.name <- attr(attr(terms(formula(model)), "factors"), "dimnames")[[1]][1] eval(parse(text=paste("tmp <- ", ifelse(class(model$data) == "data.frame", "model$data$",

Hi, I am trying to create a linked list in R by defining a class Node which has a instance variable Node. setClass("Node", representation(rate="numeric", nextNode="ANY")) The above works. But the following gives me a warning message. setClass("Node", representation(rate="numeric", nextNode="Node")) > >

hi i have gone through the achieves but still could not get my bridge to suvive a reboot . please can anyone help me am using fedora core 2 -----Original message----- From: bridge-request@lists.osdl.org Date: Fri, 28 Jan 2005 03:08:06 +0100 To: bridge@lists.osdl.org Subject: Bridge Digest, Vol 17, Issue 25 > Send Bridge mailing list submissions to > bridge@lists.osdl.org > >

Dear all, I tried to use "step" function to do model selection, but I got an error massage. What I don't understand is that data as data.frame worked well for my other programs, how come I cannot make it run this time. Could you please tell me how I can fix it? ***************************************************************************************************

I have a problem with Windows 2000 (SP2) printing to an Epson C60 on a Linux server (running Mandrake 8.1 and Samba 2.2.2 with Cups 1.1.12). I've scoured the net and posts on Usenet have not yielded any helpful response. I have 2 Win2k boxes and they both respond differently, but neither is printing. I've installed the printer on both boxes. On one I get a "unable to

Airon, I used R2.4.0 on a Windows XP (SP2) (not Chinese :-)) and it still works: > data = read.csv("u:/airon.csv") > xdata = data$Adj..Close > modwt.la8 = modwt(xdata, "la8", n.level=6) > summary(modwt.la8) Length Class Mode d1 1467 -none- numeric d2 1467 -none- numeric d3 1467 -none- numeric d4 1467 -none- numeric d5 1467 -none- numeric d6 1467

Hi, Whenever I issue this commands (as in the help for the threshold function), # # Do a 1D decomposition # tdecomp <- wd(test.data) # # Threshold it # tdecomp.thresh <- threshold(tdecomp) # # Reconstruct from the thresholded coefficients # trecons <- wr(tdecomp.thresh) # #

I am still having some difficulties with connecting R to a C++ function. I am able to call the function as expected after compiling the shared library and such. However, the call to the function is via .C; parameters from the .C call are not being passed correctly to the function. As an example, I have attached a GDB run of the code. I set a breakpoint on entry to the function I am calling

Hi, I'm trying to use mars function in R to interpolate nonlinear multivariate functions. However, it seems that mars gives me a fit which uses only very few basis function and it underfits very badly. For example, I have tried the following code to test mars: require("mda") f <- function(x,y) { x^2-y^2 }; #f <- function(x,y) { x+2*y }; # Grid x <-

Dear all, I wrote a function test1 in test1.R. Right, I am writing another function test2 on test2.R and trying to use test1 function. How can I do? Is there any similar way like including test1.R in test2.R file? Thank You Very Much. Jia-Ming ============================ $BD%2HLC(B Jia-Ming Chang PhD Student Comparative Bioinformatics Group Bioinformatics and Genomics Programme Centre

Airon, I don't think you have to find an English computer 'cause the following must work in your Chinese one :-) Let me explain. First of all, change your lines to xdata <- ckhdat$Adj..Close[1:1447] #names(ckhdwt.la8) <- c("w1", "w2", "w3", "w4", "w5","w6", "v6") note the # sign, i.e., DO NOT change the names

At useR 2006 I mentioned that it would be nice to have a way to specify binomial links that involved free parameters and described some experience with a Gosset link involving a free degrees of freedom parameter, and a Tukey-lambda link with two free parameters. My implementation of this involved some rather kludgey modifications of binomial, make.link and glm that (essentially) added a