similar to: R: various ordinations

Colleagues, I'm developing a library of functions for community ecology analyses and have a couple of questions that I've not been able to answer via faqs or docs. 1) Are there existing functions for: a) Bray-Curtis (polar) ordination? b) non-metric multidimensional scaling (NMDS)? c) canonical correlation analyses (CCA and DCA)? d) TWINSPAN (doubtful...)? 2) If not,

Well, I think the better solution would be to put them on the web: I tried to open two web pages but I forget the possword every time :-(. I see 2 quick solutions: - send the files via e-mail - put the files on CRAN (where?); However I can do these in 2-3 days only (I have sources home). Regards, Federico Spinazzi spinazzi@databankgroup.it Databank S.P.A Via Spartaco, 19, ITALY Tel. + 39 02

It seems to work smoothly now. Thank you very much. Federico Spinazzi spinazzi@databankgroup.it Databank S.P.A Via Spartaco, 19, ITALY Tel. + 39 02 55002251 -----Messaggio originale----- Da: Prof Brian Ripley <ripley@stats.ox.ac.uk> A: Federico Spinazzi <spinazzi@databankgroup.it> Cc: R-devel@r-project.org <R-devel@r-project.org> Data: lunedì 27 novembre 2000 11.03 Oggetto:

I've just uploaded the files Thanks for your attention, Federico Spinazzi spinazzi@databankgroup.it Databank S.P.A Via Spartaco, 19, ITALY Tel. + 39 02 55002251 -----Messaggio originale----- Da: Kurt Hornik <Kurt.Hornik@ci.tuwien.ac.at> A: Federico Spinazzi <spinazzi@databankgroup.it> Cc: r-devel@stat.math.ethz.ch <r-devel@stat.math.ethz.ch> Data: lunedì 18 dicembre 2000

A trick I use is to give tab-delimited text files created by excel or R the .xls extension: this may apply, and it may be better, to CSV: R couldn't see any difference whichever the extension will be, and windows will be foolished by the .xls extension an will open the file with Excel that will handel it CORRECTLY. If you need to have the data always alligned in Excel and R this trick will

Under which version of R is it supposed to run ? With 1.1.0 under windows NT 4.0 against Access databases it doesn't work, I cannot get the name of the tables, every query I execute returns with "No Data". I'm surely doing something wrong ... Federico Spinazzi spinazzi@databankgroup.it Databank S.P.A Via Spartaco, 19, ITALY Tel. + 39 02 55002251 >Several of you have kindly

Dear R users, I wonder how to weight observationswhen computing statistics and creating tables (e.g. of counts) I'm used to the SPSS paradigm (WEIGHT by foo.) where any subsequent command will weight any variable ... Suppose that I want to compute a table of weighted counts: is the right R-approach to write a little custom function or it could be better to write a new class

>Functions that handle probability weights and frequency weights (I think >the latter is what you want) are on my To Do list, but they are a long way >off so it would be great if someone else were to handle them. > I never wrote a package for R, but I'm quite fluent in other programming languages. Even if I don't use R from much time I think I can help. I basically need two

Hy you all, Short version: I think I have some code that could be interesting to make the R architecture evolve towards better thread support, easier memory management, better user interface programming (progress bar, logs), powerful debugging without recompiling (hach!) some years ago I start learning C with an ambitious project: write a C library for multivariate data analysis. On the route I

dear all, thank you for reading. I have a dataset of artists and where and when they had an exhibition. I'd like to create an affiliation network in the form of matrix, telling me which aritist have been in the same at the same time. I manage to do it, but given that I have 96000 observation the program takes 30 months to complete. her what i have done. the data look like this Artist

Dear Michael Camann, My concern was after having a hetero-computing environment for many years, I found that I had to keep an old version of Microsoft Windows based applications to be able to interact with my constituents. This at times can become very expensive. I have had to limit my budget on the UNIX/Linux platform to compensate for Microsoft Windows based applications. With Open Office

Dear Michael Camann, My concern was after having a hetero-computing environment for many years, I found that I had to keep an old version of Microsoft Windows based applications to be able to interact with my constituents. This at times can become very expensive. I have had to limit my budget on the UNIX/Linux platform to compensate for Microsoft Windows based applications. With Open Office

AARRGGHH! Sometimes it's the simple things that are particularly frustrating, especially late at night.... Can anyone suggest a simple means for replacing all of the zero values in a matrix with NANs? I ended up writing an awk script to massage the input file, which works, of course, but is rather an inelegant blunt instrument. I'd prefer an R operation. I'm certain that

Hope this isn't a faq, but.... I'm using R 0.99 for Windows under Win98. When I label points in a scatterplot with identify(), the labels appear as expected on the graphics device, but do not print when I select the printer icon. The scatter plot itself prints just fine-- only the output from identfy() is missing. Can anyone offer any hints? --Mike C.

Hi All, First off only been using Ubuntu for a week, so really very new to this, if I need to do anything in the terminal please be really basic! Running Ubuntu 10.10 I installed WINE no problem, version 1.2.2 Adobe reader has been installed via Synaptic Package manager V9.4 I then installed via WINE Adobe Digital Editions, this has also loaded and is running. I have bought some books and

Hello, i' m looking for a function to compute geary statistic for spatial correlation. Thanks. -- St?phane DRAY --------------------------------------------------------------- Biom?trie et Biologie ?volutive - Equipe "?cologie Statistique" Universite Lyon 1 - Bat 711 - 69622 Villeurbanne CEDEX - France Tel : 04 72 43 27 56 Fax : 04 78 89 27 19 04 72 43 27 57 E-mail

R-community-- Is there a contributed package (or does anyone have code otherwise) for exact inference tests and resampling statistics ala' StatExact? I've perused the package descriptions on CRAN and didn't see anything, but since several contain many functions, I thought perhaps I'd ask. --Mike C. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Michael

R-devel team-- Will the patches that Brian Ripley has posted be rolled into the main R-win distribution on CRAN? I ask because I'm going to be using R in one of my ecology courses during fall semester, and although I'll probably give the students a CD with R and a variety of other tools bundled onto it, I'll also tell them where to upgrade and look for additional packages and other

Hi I am searching for a way to do something like "ABC" -> c("A","B","C"). How can this be accomplished? I tried cut() and split(), but they do something else, it seems. The purpose for doing this is to find the number of common (and uncommon) characters, i.e. ultimately I want something like this: > foo("ABD","ADE") c(2,1) # 2

Hello list, i have a glm with family=binomial, link=logit but there is over-dispersion. So, in order to take into account for this problem i choose to do a glm with family=quasibinomial(). I'm not an expert on this subject and i ask if someone could validate my approach (i'm not sure for the tests) : quasi_glm(myformula,quasibinomial(),start=mystart) summary(quasi) # test t for