[R] Problems with rstan

Hi I'm having a really odd problem with rstan (and in fact shiny), which is I can't actually load the package: > ls (all=TRUE) character(0) > library (rstan) Loading required package: ggplot2 Error : .onAttach failed in attachNamespace() for 'rstan', details: call: pkgdesc$Packaged error: $

Re: [R] Mahalanobis Distance

Hi One thought would be to fit say a GARCH model to your historical data series, divide the returns by the sigma estimates and then repeat. This would have the advantage of getting the data to be closer to the same scale. Regards David -Original Message- From: r-help-boun...@r-pro

Re: [R] Documentation

Hi Try looking on Google for Pat Burn's "Guide for the unwilling R User" (which I think is the title) - this will get you started in the right direction. Regards David -- David Jessop Global Head of Quantitative Research UBS Investment Research +44 20 7567 9882 -

Re: [R] Two Copies of Each Message

I have the same problem - it's happened before and then just fixed itself. But rather annoying. -Original Message- From: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org] On Behalf Of Thomas Lumley Sent: 23 April 2011 00:34 To: Stephen P Molnar Cc: R-help Subject: Re:

Re: [R] Which version control system to learn for managing Rprojects?

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 He

Re: [R] Fwd: R SOFTWARE

HI The problem is the file is called "limestone.dat.txt". In Explorer in Windows you should go to Tools, Folder Options and under View you should find an option "Hide Extensions for known file types" - turn this off and then press Apply to all folders. Then you'll see the real file name. It's

Re: [R] multiple R sessions from one working directory using GNU screen

Olga There was a presentation at the London R user group about doing what you ask using the bigmemory package (http://www.londonr.org/LondonR-20090331/realtimeR.pdf). I believe you can do the same thing with ff. This wouldn't share the whole workspace but just the objects you choose. Regards

Re: [R] Popularity of R, SAS, SPSS, Stata...

To me R is just another programming language. In fact it seems to share quite a lot of the characteristics of "fashionable" languages such as python - for example dynamic typing amonst others. The fact it happens to be good for statistics and other mathematical stuff is a bonus. David --

Re: [R] questions on some operators in R

But one could argue that <= could also mean assignment (although as a mathematician I'd go with implies or perhaps 'is implied by') and wouldn't have the problem highlighted below. Similarly one could use the Pascal := for assignment. So although the idea of having two different operators for

Re: [R] HOW to install RSQLite database

Are you asking how to install the RSQLite package or how to create a SQLite database? The two are somewhat distinct questions. RSQLite is just a package of functions for R to be able to access data in an SQLite database. There isn't a separate SQLite program - just a library that is compiled into

Re: [R] Help with Tinn-R

Hi It sounds like you haven't got the right line in your Rprofile.site file. If in Tinn-R you do R, Configure, Permanent this will open and edit this file, adding in the relevant lines including one defining .trPaths. HTH David Jessop -Original Message- From: r-help-boun...@r-proje

Re: [R] How to handle large numbers?

Hi, I've realised (as I'm sure have lots of others) that the second part of my answer is complete rubbish. Obviously having a bad day. However you could work out one over your expression which then you split into two parts, calculate and then reinvert. Apologies for version 1 David -

[R] How to handle large numbers?

Hi In answer to your first question is that it can be anything. If we look at 0 * a = 0 and let a tend to infinity, and b * Inf = Inf and let b tend to zero then you can get both zero and infinity as an answer. If you say consider c * 1/c = 1 and let c tend to infinity then it can be one too (yo

[R] A zoo question / problem

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), o

Re: [R] Bug (?) in read.fwf

Jim, That works - thank you; but still doesn't explain why stringsAsFactors doesn't seem to have an effect. Regards, David -Original Message- From: jim holtman [mailto:[EMAIL PROTECTED] Sent: 08 November 2007 13:41 To: Jessop, David Cc: r-help@r-project.org Subject: Re: [R] Bug (?)

[R] Bug (?) in read.fwf

Hi, I'm trying to use read.fwf temp = read.fwf ("Raw data.txt", widths = c (11, 21, 10, 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 a