[R] Quantitative risk analysis with R

Recently a course with this title, from Vose consulting, was announced on the list. Does anyone know of any books/websites/downloadable tutorials etc that cover the same ground. ie not just quantitative risk analysis, but specifically on using R for risk analysis and as an alternative to @Risk/Cr

Re: [R] Fw: How to learn R language?

While agreeing with how good the texts that have been suggested are, the questions to me (language + systematic) suggests Braun and Murdoch " A first course in statistical programming" or/and Chambers " Software for data analysis: programming with R" These would seem to take you through developi

Re: [R] Quantitative risk analysis with R

Tobias, Thanks I will give this a look, it seems the focus is on credit risk (where I am more interested in environmental risks) but it should still be useful. Graham 2008/8/28 Tobias Verbeke <[EMAIL PROTECTED]>: > Dear Graham, > >> Recently a course with this title, from Vose consulting, was an

Re: [R] Three most useful R package

> 1) What are your 3 most useful R package? On the assumption that we mean those packages that add some generic functionality, then plyr ggplot2 Car and Hmisc (i know that is four) So similar to others peoples list I have others that are always first to be installed, but specific to my interes

Re: [R] From THE R BOOK -> Warning: In eval(expr, envir, enclos) : non-integer #successes in a binomial glm!

Corrado > I am afraid not the paragraph's title is a bit of a give away: > > Proportion Data and Binomial Errors > > The sentence reads: > " are dealt with by using a generalised linear model with a binomial > error structure". > > with the example: > > glm(y~x,family=binomial) > > You

Re: [R] Best fitted curve using AIC

Simon > I need a R script that compare known curves (e.g. logistic, exponential) > with my curve. That curve was generated fitting data of forest cover > (hectares) measured in 10 road distances (buffers). > > I´d like that comparison should be done using AICc to select the best model, > that is,

[R] resampling problem counting number of means above a specific value

I am trying to modify some code from Good 2005. I am trying to resample the mean of 8 values and then count how many times the resampled mean is greater than 10. But my count of means above 10 is coming out as zero, which I know isn't correct. I would appreciate it if someone could look at the c

Re: [R] resampling problem counting number of means above a specific value

means less than 10. It seems I misjudged the probabilities. Thanks again. Graham 2009/11/15 David Winsemius : > > On Nov 15, 2009, at 12:12 PM, Graham Smith wrote: > >> I am trying to modify some code from Good 2005. >> >> I am trying  to resample the mean of 8 val

Re: [R] resampling problem counting number of means above a specific value

E) > dim(smpls) <- c(n, N) > cnt <- sum(colMeans(smpls) > threshold) > cnt > > > I hope it helps. > > Best, > Dimitris > > > Graham Smith wrote: >> >> I am trying to modify some code from Good 2005. >> >> I am trying  to resample

[R] Reading comments in text file from R

When a text file starts with a few lines commented out with # can you read those line from within R. read.table ignores the comments to load the file, but it would sometimes be useful to be able to read what these comments say. Thanks, Graham __ R-he

Re: [R] Reading comments in text file from R

Thanks all. I assumed it would be easy, but searching yielded nothing useful. Graham __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and prov

[R] citing R - really a bibtex/jabref question

Although this is really a bibtex/Jabref question, I am hoping this might still be the best place for help. The bibtex entry in Jabref is like this @MANUAL{R2009, title = {R: A Language and Environment for Statistical Computing}, author = {{R Development Core Team}}, organization = {R Founda

[R] Sweave recode(car) and Lyx, compiling but not executing on Mac

I am just beginning to use Sweave with Lyx on a Mac (R2.8.1). I have 12 chunks of Sweave code that work fine, but this piece: <<>>= library(car) cabbages$Year<-recode(cabbages$Year,"'X2001'='2001';'X2002'='2002';'X2003'='2003';'X2004'='2004';'X2005'='2005';'X2006'='2006';'X2007'='2007';'X2008'='20

Re: [R] Sweave recode(car) and Lyx, compiling but not executing on Mac

ried a similar recode() command using Sweave on a Windows system > (not through LyX) and it worked fine. > > I hope this helps, >  John > >> -Original Message- >> From: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org] > On >> Behalf Of Graham

Re: [R] Sweave recode(car) and Lyx, compiling but not executing on Mac

Graham, > > I just tried a similar recode() command using Sweave on a Windows system > (not through LyX) and it worked fine. > > I hope this helps, >  John > >> -Original Message- >> From: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org] &

Re: [R] Sweave recode(car) and Lyx, compiling but not executing on Mac

iginal code, but run using the with command. Its now working. Thanks to everyone for there help. Graham 2009/6/12 Graham Smith : > I am just beginning to use Sweave with Lyx on a Mac (R2.8.1). I have > 12 chunks of Sweave code that work fine, but this piece: > > <<>>= > l

Re: [R] off topic but need your pointers about statistics

> Could anybody give me some pointers about existing books/articles > about the greatest inventions/discoveries in statistics? And topic > list? You could have a look at http://www.amazon.com/Lady-Tasting-Tea-Statistics-Revolutionized/dp/0805071342/ref=sr_1_1?ie=UTF8&s=books&qid=1245356064&sr=8-1

Re: [R] Kite diagrams

I asked the same question on R-sig-eco, and Ben Bolker provided this solution, which as I assume this should show up in a search I copy here. However, if someone can come up with a single function, that would be good. --

Re: [R] Kite diagrams

09:41, Jim Lemon wrote: > On 07/09/2010 07:23 AM, Graham Smith wrote: >> >> I asked the same question on  R-sig-eco, and Ben Bolker provided this >> solution, which as I assume this should show up in a search I copy >> here. >> >> However, if someone can c

[R] Preparing data frame for Plotrix kiteChart

Although, I can fix this, I am trying to sort out something as straighforward as possible for my students, and I have some questions that hopefully someone can help me with. My data is: Species DistanceCount A 5 0 A 10 5 A 15 5

Re: [R] Preparing data frame for Plotrix kiteChart

Ben, Thanks for your help on this. Obviously a bit of a mental block on my part, as it seems painfully obvious now. Graham __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.

Re: [R] Preparing data frame for Plotrix kiteChart

Jim, Ben's solution is excellent, I just thought I would add an alternative starting with the X dataframe: x2<-matrix(X$Count,ncol=3) rownames(x2)<-unique(X$Distance) colnames(x2)<-unique(X$Species) kiteChart(t(X3),xlab="Distance",ylab="Species") Thanks, very useful to see an alternative appr

[R] OT Gmane and r-help moderator approval

I have started to read r-help on Gmane using Thunderbird as a reader. Before that I had messages sent to gmail account. The first post through Gmane needed moderator approval, but then I got a message from Your friendly autoauthorizer at Gmane.org saying You are now authorized to post to th

Re: [R] OT Gmane and r-help moderator approval

Ted, The moderator approval is being applied by the R-help server (mailman) at ethz.ch, the home of R-help, not by Gmane. If you look at the headers of your latest message (the one to which I am replying) you will see the header: Thanks for the explanation. The message is "Posting by a non-me

[R] Cost-benefit/value for money analysis

I assume this has a "proper" name, but I don't know what it is and wondered if anyone knew of a package that might do the following, or something similar. As an example, assume I have borrowed and read 10 books on R , and I have subjectively given each of them a "value" score in terms of how usef

Re: [R] Cost-benefit/value for money analysis

Ben > Perhaps you can specify your question more precisely, or differently. > The way I interpret it, if there are no interactions in price > (e.g. you get a discount for buying more than one book at a time) > or in value (e.g. you learn more from one book having read another), > then you get t

Re: [R] Cost-benefit/value for money analysis

David, >> > I think a similar argument "at the margins" would show that even if the > task were specified as maximal value with a budget, simply ordering by the > value/price and buying until the cumsum of the price was greater than budget > would solve the alternate statement of the problem. I s

Re: [R] Cost-benefit/value for money analysis

Denis, > Are you perhaps thinking of conjoint analysis? > > Thanks, but as far as I can make out, having just looked at conjoint analysis, it looks like some form of discriminant analysis, which is not what I am looking for. I only have two variables cost and value. I am ignoring how you estab

Re: [R] Cost-benefit/value for money analysis

Liviu Try this: > > require(sos) > > findFn('cost benefit') > found 12 matches > Thanks, I wasn't aware of sos, however, following up the hits hasn't moved me any further forward, except to demonstrate that such a function I want doesn't exist. But I will try some other search options. Graham

Re: [R] R reports

> Good grief. Adding a report function is not going to make R less flexible. > Don't > you want to use a tool that's relevant to the rest of the world? That world is > much bigger then your world. This is ridiculous. How big a world do you want , Google use R successfully , and it is being used b

Re: [R] BiodiversityR GUI on macosx

Janos, Vegan has just been updated due to a problem with BiodiversityR and R 2.13, not sure if its the same issue you are having, but updating vegan could be worth a try. Graham On 1 June 2011 20:08, János Korponai wrote: > Dear List! > > I installed R and quite a few packages I use. When I

Re: [R] Decision Trees /Decision Analysis with R?

Jon, So TreeAge fits models but won't predict from them? That seems like > bizarre behavior. > Nothing bizarre about TreeAge, just a different tool in a different disicpline. http://en.wikipedia.org/wiki/Decision_tree Graham [[alternative HTML version deleted]] __

Re: [R] Can we prepare a questionaire in R

> > 1) Is there a way to populate html form element values directly into R or > is it only possible to get the values into a db or an excel file or a csv > file and import it for data analysis. > I realise this isn't exactly what you are asking, but it is a possible solution. If you google or sea

[R] medians in Wilcoxon disagree with median function

I am sure I am opening myself up to looking stupid, but I have two samples with medians of 613.5 and 189 (difference in location of 424 compared to the difference suggested from the wilcoxon of 291.5) > wilcox.test(pipwtCount,pipwdCount, conf.int=TRUE, na.rm=TRUE) Wilcoxon rank sum test da

Re: [R] medians in Wilcoxon disagree with median function

I am sure I am opening myself up to looking stupid, but I have two samples > with medians of 613.5 and 189 (difference in location of 424 compared to > the difference suggested from the Wilcoxon of 291.5) > > After a rather frustrating search, with it only explained in one of the books I found. I

Re: [R] medians in Wilcoxon disagree with median function

David, > > I am sure I am opening myself up to looking stupid, >> > > Or exposing a failure to read the help page. Well no, and of course I did read the help pages as well as several introductions on Wilcoxon before posting, but as I said in my other post it is generally not at all clear, the

[R] Cran package directory 404 error since 30th December

I have been getting a object not found error trying to access the CRAN package directory since the 30th December. I have tried several mirrors with the same error. A search here only shows a single question on this from anyone else (on the 30th December) which wasn't answered. I am surprised that

Re: [R] Cran package directory 404 error since 30th December

Thanks Brian, The short answer is that this needs someone in Vienna to fix (people do > have vacations and take weekends off), and that the web/packages directory > is pure sugar: the packages are still there, the check results are there > ... just the summary pages are missing and they are access

Re: [R] Spatstat users.

Yes I am an active spatstat use On Wednesday, 28 March 2012, Rolf Turner wrote: > > This is a cry for help. My apologies for taking up bandwidth > with an issue that is not really on topic. But I really do want > to acquire the requested information. > > In the course of preparing my PBRF (perf

Re: [R] Editor for Mac OSX

Have a look at TextMate http://macromates.com/ Graham 2008/6/18 Sebastian Leuzinger <[EMAIL PROTECTED]>: > Dear R-list > I am (forced) to change from Linux to Mac and am now looking for a new > editor for R. I would like one that features a split window (console + > editor) as well as syntax hi

[R] ubuntu repository for R

Maybe this is more a Ubuntu question,but... I am trying to get synaptic to work with R I have added http://cran.uk.r-project.org/bin/linux/ubuntu as the URL and hardy/ as the distribution. But when I reload the repositories, I get an error Failed to fetch http://cran.uk.r-project.org/bin/linux/

Re: [R] ubuntu repository for R

Marielle, Thanks for this. I think I have done as you suggest but still get the public key error. Do I need to reboot to get it to work: here is the script: [EMAIL PROTECTED]:~$ gpg --keyserver subkeys.pgp.net --recv E2A11821 gpg: requesting key E2A11821 from hkp server subkeys.pgp.net gpg: key

Re: [R] ubuntu repository for R

Dirk, Thanks for this, in fact I did notice the error after posting. I didn't know there was an r-sig-debian list, I shall join and use it for any future questions of this type. Graham 2008/6/21 Dirk Eddelbuettel <[EMAIL PROTECTED]>: > On Sat, Jun 21, 2008 at 06:03:39PM +0100

[R] extracting averages from smooth.ppp output on spatstat

I have used smooth.ppp in spatstat to create a smoothed surface plot based on randomly selected depths across a lake (as marks). I wonder if based on the smoothed surface plot if I can calculate the average depth for each 10x10 grid square across the lake. I can't see any obvious way of doing thi

[R] Simple Gantt like chart for numbers rather dates

I would like to produce a chart that looks like a Gantt chart (or shingle plot), but instead of tasks you have variable names and instead of start and finish dates you have an upper and lower numeric value. If that makes sense, is there an obvious way of doing this. Thanks, Graham _

Re: [R] Simple Gantt like chart for numbers rather dates

> You could consider modifying the code for gantt.chart in plotrix. Not sure that I have the skills, but I was tempted when I found plotrix earlier today, to see if it could be modified someway. Thanks, Graham __ R-help@r-project.org mailing list http

Re: [R] Simple Gantt like chart for numbers rather dates

it to look. > > On Fri, Oct 17, 2008 at 3:22 PM, Graham Smith <[EMAIL PROTECTED]> wrote: >> I would like to produce a chart that looks like a Gantt chart (or >> shingle plot), but instead of tasks you have variable names and >> instead of start and finish dates you

Re: [R] Simple Gantt like chart for numbers rather dates

Jim, > Gabor is right, gantt.chart comes close but you will have to change all the > POSIXct axis calls to plain old axis calls and manually create the list of > gantt.info with the x values as numbers. Mmm, I have had a quick look at the code and it seems a bit beyond me, but it could be a good

Re: [R] Simple Gantt like chart for numbers rather dates

Gabor, > Then try something like this. We plot it as a stacked > horizontal bargraph where the first bar in the stack is white > and with border = 0 so its not visible. > > # test data - rows are from and to points and > # column names are the labels > mat <- matrix(1:10, 2, byrow = TRUE, >

Re: [R] Akaike weight in R

Odette > Wondering how can I generate "Akaike weight" with R? I know the description, > but is there any function to generate by R on the web-site or R library? > I am using GLM or GLMM (family=binomial), so would be appreciated if you > help me. You could have a look at this. http://bm2.genes.n

Re: [R] Akaike weight in R

> Seems pretty clear from a quick glance at that page (and in retrospect, even > from the URL itself) that Graham misspelled the package name, Try looking > for package, aod (without any caps.) Yep, mea culpa (and I have probably spelt that wrong as well), it was quick after thought as I almost ju

[R] Suppressing tick labels?

I am trying to suppress the tick labels on the x-axis of the following: barchart(richness[Wood=="V"]~Sample[Wood=="V"]) I have tried col.axis="white" I have tried removing the axis all together with axes=FALSE I have tried xaxt="n" I have also tried labels=c"(label1", "label2") to replace the

[R] R2HTML package and Open Office: text only pasted

I am trying to use R2HTML (just downloaded from CRAN) to paste R (2.6.0) results output via the clipboard to OpenOffice Writer and Calc (version 2.3on WinXPPro) Pasting into Excel gives a formatted table of results (as expected), but pasting into Calc simply pastes the HTML code. Trying paste spe

Re: [R] R2HTML package and Open Office: text only pasted

TED]> wrote: > > Graham, > > I'm not sure what the issue is, but I would suggest using OpenOffice > directly with the odfWeave package. > > Max > > -Original Message- > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] > On Behalf Of Graham Smith &g