similar to: Building a function

Hello, I need to read a vector containing names of different variables from a text file (a unique column). Among them one is called "T". When I use the function read.table with default arguments and when I call the element of the data frame corresponding to name of this variable it returns me the logical value "TRUE" whereas I was expected it to return the character

Dear R-user, I am trying to use the function 'parLapply' from the 'snow' package which is supposed to work the same wys as 'lapply' but for a parallelized cluster of computers. The function I am trying to call in parallel is 'dudi.pca' (from the 'ade4' package) which performs principal component analyses. When I call this function on a list of

Dear useRs, I am trying to fit a Cox PH model on survival data from a lung cancer dataset. I would like to include the patient staging (I-IV) as a covariate. For this I use the following function: coxph(Surv(time,status) ~ stage) The staging information is a categorical variable, and it is important to take the ordering into account (I<II<III<IV). Does the coxph function handle

While trying to debug a goofy XML loading issue in IE, I''ve found that Mongrel (latest) returns Content-Type: 0 with every request on a particular (CentOS 4) server, yet not on my local (OS X) box. These both access identical Rails apps. This seems like a clue, but thought I''d ask here if for some reason this is expected behavior. Both running Ruby 1.8.4. Both return

Hello, I''m trying to write a rails application serves by mongrel and using accentuated characters in the .rhtml page. But Mongrel replace them by ''?'' . It works fine for static pages by defining the charset to iso-8859-1 in the mongrel_mime.yml But how to change the default encoding (seems to be UTF-8) for the dynamic pages ? thanks for your help. -------------- next

Hi all How can I change the limits (xlim or ylim) in a plot that has been already created? For example, consider this naive example curve(dbeta(x,2,4)) curve(dbeta(x,8,13),add=T,col=2) When adding the second curve, it goes off the original limits computed by R for the first graph, which are roughly, c(0,2.1) I know two obvious solutions for this, which are: 1) passing a sufficiently large

On one of my development servers mongrel dies when idle for any length of time. Since I''ve not been able to solve that problem I thought I''d route around it by using monit to kick things when necessary. My monitrc contains the following... -------------------------------------------------------------------------------- check process mongrel_8310 with pidfile

I just created a new rails project "test". I then did "switchtower --apply-to ~/user/test test" I then moved into test and tried "rake restart" and got: kfelkins@lurch:~/user/test$ rake restart (in /home/kfelkins/user/test) rake aborted! Don''t know how to build task ''restart'' I see restart in deploy. Can restart be invoked from the

Hi, Is there anything known about ZFS under 10.0-BETA4 when FreeBSD was upgraded from 9.2-RELEASE? I have two servers, with very different hardware (on is with soft raid and the other have not) and after a zpool upgrade, no way to get the server booting. Do I miss something when upgrading? I cannot get the error message for the moment. I reinstalled the raid server under Linux and the other

Hi all, Is it possible and easy to make a CTI server with Asterisk? Florent,

Dear all, I am studying a dataset using the aov() function. The independant variable 'cds' is a factor() with 8 levels and here is the result in studying the dependant variable 'rta' with aov() : > summary(aov(rta ~ cds)) Df Sum Sq Mean Sq F value Pr(>F) cds 7 0.34713 0.04959 2.3807 0.02777 Residuals 92 1.91635 0.02083 The dependant variable

Hello everyone on the list, I?m borrowing a bit of your time in order to present a little CSS experiment I?ve been working on: a stylesheet which gives a Markdown-like aspect to HTML elements, especially those elements that the Markdown syntax generates in the first place. This means > signs for blockquotes, # signs or underlines for titles, etc. I wrote a mini-website for it:

Hi, I have a server at Hetzner and something strange happend. First, I installed FreeBSD 10.0-BETA3 (amd64) via their FreeBSD 9.2-RELEASE rescue system, that's ok. I had to configure the network by using the em driver -> em0 interface. But suddenly, the network was lost. After an ACPI reboot, nothing. Going to the vKVM show me the system didn't detected em0 anymore but an nVidia

Hy all of you, I successfully installed an AsterikNow fo a client and almost everything works fine. I can call/recieve in internal with perfect quality. I can do the same with external EXCEPT the little delay in the communication. I have almost 0,5 s of delay between speakers only with outside. I checked the QoS and no packets are lost, I have the G729 installed, configured and declared as

Hi all, I have noticed incorrect parsing of very small hexadecimal numbers like "0x1.00000000d0000p-987". Such a hexadecimal representation can can be produced by sprintf() using the %a flag. The return value is incorrectly reported as 0 when coercing these numbers to double using as.double()/as.numeric(), as illustrated in the three examples below:

Hi, I'm Florent BERANGER, from Flonix ( http://www.flonix.com ). After several tests, we have found that Syslinux 3.00 pre9 is no longer compatible with USB stick booting. Syslinux 2.13 works fine with this feature. Error infos : Syslinux 3.00 pre9 only displays its version and a new line with a "a" character and then hangs. Tests configuration : Syslinux applied from : Linux

Maybe I do not explain well what I would like to do. I do not want to change the labels of the axis, but the scale. What I want is a general procedure for changing the scale. Its like using a logarithmic scale on a plot. Labels are the same, but the increases of x along the x-axis are defined by a known monotone and continuous function. Florent Bresson ----- Message d'origine ---- De :

Hola. Me interesa meter una serie de regresiones lineales en una lista a la que voy a denominar L. El problema es que a posteriori necesito sacar valores de esas regresiones. Sin embargo, al llamar a L[1] este no es un objeto del tipo "lm" sino que es del tipo "list" y no puedo aplicarle funciones relacionadas con la regresión (tal y como puede ser hacer un summary para

Hi all, I believe there is an issue with passing NULL to the function I(). class(NULL) # "NULL" (as expected) print(NULL) # NULL (as expected) is.null(NULL) # TRUE (as expected) According to the documentation I() should return a copy of its input with class "AsIs" preprended: class(I(NULL)) # "AsIs" (as expected) print(I(NULL)) # list() (not expected!

Hi, I run R 2.10.1 under ubuntu 10.04 LTS (Lucid Lynx) and klaR version 0.6-4. I compute a model over a 2 classes dataset (composed of 700 examples). To that aim, I use the function NaiveBayes provided in the package klaR. When I then use the prediction function : predict(my_model, new_data). I get the following warning : "In FUN(1:747[[747L]], ...) : Numerical 0 probability with