similar to: Converting a S-plus file.

Hello, The problem I'm working now requires to operate on big matrices. I've noticed that there are some packages that allows to run some commands in parallel. I've tried snow and NetWorkSpaces, without much success (they are far more slower that the normal functions) My problem is very simple, it doesn't require any communication between parallel tasks; only that it divides

Hello After upgrading to ruby 1.8.2, finally got rails to install properly. Now, following the tutorial, I found a couple of things: First, apparently rails tries to establish local mysql connections using "/tmp/mysql.sock" which mandrake does not use. In mandrake 10.1, this file is located at "/var/lib/mysql/mysql.sock". The solution is to create a simlink

Hello I''m trying to use rubyonrails, but had some troubles: First, there was an issue with gems (it did not finished the installation): # gem install rails Config file /root/.gemrc does not exist Attempting local installation of ''rails'' Local gem file not found: rails*.gem Attempting remote installation of ''rails'' Updating Gem source index for:

Hello, Is there some equivalent function in R of Mathematica's "Apply" i.e. Apply[ f, g[a,b]] ==> f[a,b] In concret, I have a matrix of indexes: > ind = cbind(1:5, 1:5+5) > ind [,1] [,2] [1,] 1 6 [2,] 2 7 [3,] 3 8 [4,] 4 9 [5,] 5 10 and I'd like to extract sequences 1:6, 2:7, 3:8, ..., 5:10 from a vector x. What would be the

Hello I'm stuck with some notebooks having MacOS 10.2.8. After trying R-2.2.0 (which won't run), I had to settle with R 1.7.1, which runs fine. The problem is this: I have a csv file in a web server, which I'd wish to be able to load with d <- read.csv("http://server/path/cuestionario.csv") Unfortunately it doesn't work in R 1.7.1 / Mac, although the help page

Hello I'm trying to use rpy with latest R (2.2.0), but unfortunately it seems there is some kind of undefined symbol in grDevices.so (utf8locale) Within python, this message appears: >>> import rpy Error in dyn.load(x, as.logical(local), as.logical(now)) : unable to load shared library '/usr/local/lib/R/library/grDevices/libs/grDevices.so':

Hi all, Is there an easy way to generate an object wich will be the same matrix, but ordered by de cfp value? The data frame consists of numeric columns: "Block" "X" "Y" "cfp" "yfp" "ID" 0 524 244 213.41795 7.18482109 1 0 556 270 65.383904 9.568372661 2 0 528 316 40.789474

Hi all, I want to make a vector with the third column of a matrix, but only for the 2+3n rows of the matrix, with n being an entire number from 0 to a million. How can I do that in an easy way? Thanks in advance, Juan Pablo [[alternative HTML version deleted]]

Hi, I''m tying to load a full HVM enviroment with windows XP to test my first xen VM. This is my config file http://dpaste.org/pbJd/ <http://dpaste.org/pbJd/>when i run the command : xm create winxp.cfg i got Error: Domain ''winXP'' does not exist. Somebody can help me with this? i did read docs about config files, everyting seems to be in place thanks --

Dear Contributors: I have the next matrix: "X" "Y" "Z" 1 2 526 2 5 723 3 10 110 4 7 1110 5 9 34 6 8 778 7 1 614 8 4 876 9 6 249 10 3 14 I want to order the matrix from bigest Z (1110) to lower Z (14). Then I want to asign a color scale vector from blue ( bigest Z) to orange

Hello list; I´ve updated my windows 2k3 GPLPV drivers from 0.9.9 to 0.9.12-pre13. But now, i have two xen block devices; (of course, one of them is not working and is marked with the yellow exclamation). How can i fix it, or how can i uninstall the GPLPV drivers in order to make a clean install? Thanks Juan Pablo _______________________________________________ Xen-users mailing list

I got this message when i''m trying to create the VM. Error: Device 0 (vif) could not be connected. Could not find bridge device xenbr0 Is there a way to change de interface from eth0 to eth3? thanks -- *-----* *Juan Pablo Lopez Bergero* *Cell: 15-3957-3455* * * _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com

Dear R community: it is possible to replace NA?s in a data frame with zeroes? what should I do? Thanks in advance Juan Pablo _________________________________________________________________ MSN Photos es la manera m?s sencilla de compartir e imprimir sus fotos: http://photos.latam.msn.com/Support/WorldWide.aspx -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-

In order to create a paravirtualized guest/DomU, should i use the same distro as the host/dom0 is? Or is it possible to install a paravirtualized Debian (as a guest / DomU) into a CentOS (host / Dom0) ? Juan Pablo On Tue, Jan 20, 2009 at 8:42 AM, Ferenc Wagner <wferi@niif.hu> wrote: > Juan Pablo Torres <juanpablotorres@gmail.com> writes: > > > Im trying to install a

Dear R users, Consider the following example function: f = function(a,b) { g = function(x) a*x + b h = function(x) g(x)^2 + x^2 opt = optimize(h,lower = -1, upper = 1) x.min = opt$minimum h.xmin = opt$objective g.xmin = g(x.min) return(c(x.min, h.xmin, g.xmin)) } In my real problem the function that plays the role of "g" is costly to compute. Now, to

Hello list; Im trying to install a paravirtualized Debian, but as an absolute newbie i´m, i don´t know what to put when the wizard asks me to give an "Install Media URL". Thanks in advance; Juan Pablo _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users

Hi, i have a trouble with a ocfs2 partition. The "df -kh" command reports 63 GB of free space but only can use about 5 GB of this free space !! Then, the ocfs2 partition is wasting 58 GB of free space !!? df -kh S.ficheros Tama?o Usado Disp Uso% Montado en /dev/sda1 300G 238G 63G 80% /home/mail This are the mount options of the partition: mount /dev/sda1 on

Dear Contributors: I have two vectors x and z, and I want to display the histograms of both vectors in the same graph, x in red bars, z in blue bars. If you have any clue on how to do that, I will be very glad to hear it!!!!!! Thanks in advance again, Juan Pablo Fededa [[alternative HTML version deleted]]

Hi all, I have the next matrix: a b c 1 2 23 2 3 42 3 0 54 4 5 23 5 0 22 6 7 21 7 1 20 8 9 19 I want to filter the rows with the values of b higher than 1 in a way that leaves me the next matrix: a b c 1 2 23 2 3 42 4

hi Juan, It is not so elegant, but work fine. I know that our colleagues can do it on a simple line. z<-c(526,723,110,1110,34,778,614,249,14) v1<-NULL v2<-NULL for (i in 1:(length(z)-1)) { for (j in i:length(z)) { v1<-rbind(v1,z[i]) v2<-rbind(v2,z[j]) } } df<-data.frame(cbind(v1=v1,v2=v2)) names(df)<-c("v1","v2") df$ratio<-df$v1/df$v2 Kind regards,