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Michael S. Jessop wrote: > > This may belong elsewhere... but I downloaded and and installed wxGTK on > Fedora Core 2 (I know I know, beta software) then downloaded and built > wxRuby successfully (at least I didn''t get any errors - extconf.rb, make, > make install). Whenever I try to run a...

...odel.G.mct, test = adjusted(type = "single-step")). Any suggestions as to how to create a composite factor variable in the dataframe that would permit execution of the analysis code would be much appreciated. I am using R version 2.13.0 with packages lme4 and multcomp loaded. Regards,B Jessop [[alternative HTML version deleted]]

...rep (16, 6)) ,skip = 2, n = 2, stringsAsFactors = FALSE, strip.white = TRUE) but no matter what I do the strings are turned into factors. I believe it's the "n=2" parameter that causes the problem as it seems to work without this. Am I missing something? Thanks in advance, David Jessop -------------- next part -------------- Issued by UBS AG or affiliates to professional investors for information only and its accuracy/completeness is not guaranteed. All opinions may change without notice and may differ to opinions/recommendations expressed by other business areas of UBS. UBS...

Hello, I''ve been testing my project with some manual tests. One of them consists of deleting cookies ("clean personal info" in firefox) just before submit the login form. Then, I get an error. The error message is: ActionController::InvalidAuthenticityToken in SessionsController#create I''m on Rails 2.0.2 with restful_authentication plugin. I''m using

...ent", as a consequence of the previous error summary (Model.G.mct2, test = adjusted(summarytype = "single-step")) Clearly, this approach is incorrect (and I have tried others). How can I introduce the selected set of contrasts into the mct? Thanks for any help provided. Regards,B. Jessop [[alternative HTML version deleted]]

Gabor As someone trying to the rest of my team using Subversion (which I have used for a while, but more as a backup / record of changes), have you a neat / automated way of building a package from a subversion repository? Thanks David Jessop -------------------------- David Jessop Global Head of Quantitative Research UBS Investment Research +44 20 7567 9882 ----- Original Message ----- From: r-help-bounces at r-project.org <r-help-bounces at r-project.org> To: Tal Galili <tal.galili at gmail.com> Cc: r-help at r-project....

Hello, I have run a linear discriminant analysis for the simple 2 group case using the MASS package lda() function. With priors fixed at 0.5 and unequal n for each group, the output basically provides the group means and the LD1 value. There is no automatic output of the cutoff (decision boundary) value used to classify values of the response variable into the different groups. I have tried

Dear r-help, I would like to select a subset of levels from a factor variable in a data frame and return a data frame. The data set consists of 3 variables, 2 of which are factors (Site, Fish) and one numeric (Datavalue) as follows: Site Fish Datavalue AB 2-1 2.3 AB 2-1 2.4 AB 2-1 2.2 AB 2-2 2.6 AB 2-2 2.5 AB 2-2 2.7 AB 2-3

Dear R, I have two questions: 1, Why both R and Matlab give 0*Inf==NaN? To my knowledge, it should be zero mathematically. Am I right? 2, I need to calculate e.g. exp(a)/(exp(b)+c), where both a and b are very large numbers (>>1000, e.g a=1000, b=1007, and c=5). R gives me NaN when I use the following command: > exp(1000)/(exp(1007)+5) [1] NaN I am pretty sure this should be close to

R-help, I recently updated R from 2.13.0 to 2.13.1 (32-bit Windows version) and now have a problem updating packages. I am running Windows 7 as operating system. As the FAQ suggests, I uninstalled 2.13.0 before installing 2.13.1. On first opening R, I ran "update.packages(checkBuilt=TRUE, ask=FALSE) ras also recommended and selected the NS Cran mirror. On doing this the following error

...leased to announce the first meeting of the London useR Group. Date Tuesday 31st March Time 4pm to 7pm Venue The Wall 45 Old Broad St London EC2N 1HU Tel 020 7588 4845 Speakers will include * David Jessop UBS * Markus Gesmann Lloyd's of London * Pat Burns Burns Statistics * Rory Winston The Research kitchen Ltd This is a great opportunity to meet and mingle with other R users in the London area. Please send an email to marketing@mango-solutions.com...

Dear help list: I am trying to reshape a data frame from long to wide format and with a reduced variable list using reshape2. The original data frame format is: Site Obs_no LengthSite 1 Obs 1 10Site 1 Obs 2 13Site 1 Obs 3 14.........Site 2 Obs 1 5Site 2 Obs 2 7Site 2 Obs 3 9 Site and Obs_no are factors and Length is a numeric variable. There are 15

I have just installed the latest versions of R and Tinn-R (running Windows XP prof.) R 2.11.0 Tinn-R version 2.3.5.2 Everything seems fine, except for the following: I usually do this: Open Tinn-R and click on the R icon to open R - this splits the screen into two parts horiozontally, with Tinn-R on top and R in the bottom window. My problem is simply this: By highlighting one line, and click the

I am new in R. Can anyone tell : 1. how we can write our own functions in R ? 2. how we can save those functions and recall to use them? 3. what extensions are used for saving a file? -- Siddharth Arun, 4th Year Undergraduate student Industrial Engineering and Management, IIT Kharagpur [[alternative HTML version deleted]]

...fort has fallen far short of its goals, but they insist it's still relevant. They also say that the industry may find a way to build on the technical foundation laid by SDMI. "The mission of SDMI is, was and remains to create an environment for secure trading in music," said Paul Jessop of the International Federation of the Phonographic Industry, a trade group for record companies worldwide. "It's not something that's changing. . . . What we haven't achieved at this time is consensus around any set of technologies." SDMI was launched in early 1999. At t...

Hi everybody, I want to use a ogg-equipped notebook for playing music for (folk and ballroom) dancing, and a player for this should have two features I' like to find or implement: (1) I want the middle part of a song repeat "endlessly", with two track marks that I want to hide somewhere in a vorbis comment. (One day I want to control that with a gui or SIGUSR1 or something else,

Hi, I'm a 3rd year university student in the UK and for my dissertation (Final Year Project) I'm trying to create a peer to peer streaming network, where a audio stream gets sent around the network in a p2p fashion hopefully reducing the load from the source. I've decided to use ogg vorbis for my stream, and I have successfully created a small app that can read data from a .ogg file

...eedances and does so by employing a self-exciting structure with a parameterization inspired by standard EVT models. The models have been implemented in S-PLUS and will be applied to financial data and used to estimate Value-at-Risk and other risk measures. 2:00 PM Backtesting with S-PLUS Dr. David Jessop UBS Warburg Backtesting an investment strategy is a computationally intensive process. It involves downloading a significant amount of data, calculating risk models back through time and the ability to create optimized portfolios and calculate the performance of these through time. This talk discus...

NB: This email and its contents are subject to the Eskom Holdings Limited EMAIL LEGAL NOTICE which can be viewed at http://www.eskom.co.za/email_legalnotice ------------------------------------------------------------------------ Good Morning Im busy doing an exercise on Foundation of Statistical Description and Analysis,Please check the attached exercise on page 3.In this exercise the first

Hi I'm having a problem using the zoo library and I can't see what I'm doing wrong. For example setting up the data > t1 = zoo (matrix (1:12, nrow = 3), order.by = as.Date (c("2008-08-01","2008-08-02","2008-08-03"))) > colnames (t1) = c ("A", "B", "C", "D") > t2 = zoo (matrix (1:12, nrow = 3), order.by =