search for: rwiki

...ryz0.zc <- pcor.rec(y,z0,zc,method=method,na.rm=na.rm) rxy.z <- (rxy.zc - rxz0.zc*ryz0.zc)/( sqrt(1-rxz0.zc^2)*sqrt(1-ryz0.zc^2) ) return(rxy.z) } } and this piece of code also i tried to use. Rinv <- solve <http://wiki.r-project.org/rwiki/rhelp.php?id=solve>(R) D <- diag <http://wiki.r-project.org/rwiki/rhelp.php?id=diag>(1 / sqrt <http://wiki.r-project.org/rwiki/rhelp.php?id=sqrt>(diag <http://wiki.r-project.org/rwiki/rhelp.php?id=diag>(Rinv))) P <- -D <http://wiki.r-project.org/rwiki/rhelp...

Dear list, There is a new rwiki (http://rwiki.sciviews.org) section for 'large scale data' at http://rwiki.sciviews.org/doku.php?id=large_scale_data. This is a massive topic of interest to many. I could use some help filling in the content so that this can develop into a powerful resource for the r-community. I hope you l...

I think I - almost - got the knack for GUI programming using the tcltk library. Maybe I will update the RWiki with this: # ################################################# # library(tcltk) # # Create some matrix - nothing about tcltk here # matrix <- cbind(rnorm(100), rpois(100, lambda=10), runif(100), rt(100, df=2), rt(100, df=4)) colnames(matrix) <- c("Normal", "Poisson (lamb...

Dear R-friends, is Rwiki down? I've been trying to login for the past couple of days with no success. Yours sincerely, Jin ____________________________________________________________________________________ wherever you're surfing.

I need a picture like this: http://rwiki.sciviews.org/doku.php?id=graph_gallery:graph38 http://rwiki.sciviews.org/doku.php?id=graph_gallery:graph38 but when I try compile it require("hexbin") data(NHANES)# pretty large data set! good <- !(is.na(NHANES$Albumin) | is.na(NHANES$Transferin)) NH.vars <- NHANES[good, c("...

Per http://rwiki.sciviews.org/doku.php?id=developers:projects:gsoc2010 -- and http://rwiki.sciviews.org/doku.php?id=developers:projects:gsoc2010:syrfr -- I am applying to mentor the "Symbolic Regression for R" (syrfr) package for the Google Summer of Code 2010. I propose the following test which an appli...

Hello all, It seems that the next improvement to the R Graph Gallery is categorization of the graphics, that way each graph will be easier to find. That step should be done *carefully* if we want to avoid the opposite side-effect : graph not reachable through the categories. That's why the wisdom of the R community is required. Graphics will be classified in : - categories -

...n I opened the webpage this morning it said: "The group named r-help-archive has been removed because it violated Google's Terms Of Service." Is there an alternative website which uses a similar structure to google groups? I had a quick browse on the R Wiki (http://wiki.r-project.org/rwiki/doku.php?id=links:links) but didn't see a page with this sort of info. Thank you kindly, Tony Breyal

...ters[4:6] intersect(y,z) which, of course, is non-NULL: is.null(character(0)) # FALSE So, how can we test if a vector is, say, character(0)? The following doesn't (seem to) work: x <- character(0) x == character(0) # logical(0) More snooping led to the following: wiki.r-project.org/rwiki/doku.php?id=tips:surprises:emptysetfuncs and at the bottom of the page it says "logical(0) is an empty set, thus is TRUE". However, I get isTRUE(logical(0)) # FALSE but, on the other hand, all.equal(x, character(0)) # TRUE This would seem to be the solution, but am I missing some...

Hello R-users, Checking the archives, I recently came across this topic: "export tables to Excel files" (http://r.789695.n4.nabble.com/export-tables-to-Excel-files-td1565679.html#a1565679), and the following interesting references have been proposed: http://rwiki.sciviews.org/doku.php?id=tips:data-io:ms_windows http://www.r-bloggers.com/export-data-frames-to-multi-worksheet-excel-file-2/ but my problem is somehow a small extension to what has been discussed, and although i have a solution, i seek something more elegant. I want to export multiple datafram...

Hi All, I'd like to plot something like http://www.nawcwpns.navy.mil/~weather/mugu/mesodata/analysis.html Looking through the galleries at http://addictedtor.free.fr/graphiques/allgraph.php http://r-spatial.sourceforge.net/gallery/ http://fawn.unibw-hamburg.de/cgi-bin/Rwiki.pl?GraphGallery demo(graphics) I did not find a function to plot a 2d field on a matrix. I did find mention of a quiver function in the archives. Is this the best solution or are there other tools I missed? quiver<- function(u,v,scale=1,length=0.05) # first stab at matlab's quiver in R...

...I am looking for a reference page that gives me a complete list of R string manipulation operations. At this moment, I am looking for something like basename and dirname. The following webpage doesn't give me any information. Can somebody point me a better resource? http://wiki.r-project.org/rwiki/doku.php?id=rdoc:base:basename Regards, Peng

Hello I tried to install R on my Transformer Prime without root. I downloaded the three files i found on: http://rwiki.sciviews.org/doku.php?id=getting-started:installation:android and i extract all the files, also without root my prime. But now i can't install R with the files i extractet. Is it possible to install R on my Prime without root and how can i do it? Or is root a must, for using R? Thanks for he...

...utions in exporting R graphs, especially, the often-asked questions: - How can I export R graphs in vectorized format (EMF) for inclusion in MS Word or OpenOffice outside of Windows? - What is the best solution(s) for post-editing/annotating R graphs. The page is at: http://wiki.r-project.org/rwiki/doku.php?id=tips:graphics-misc:export. I would be happy to receive your comments and suggestions to improve this document. All the best, PhG -- ..............................................<?}))><........ ) ) ) ) ) ( ( ( ( ( Prof. Philippe Grosjean ) ) ) ) ) ( ( ( ( ( Numeri...

Maybe I expect too much from a non compiled language. Anyway, I wonder whether it is possible in R to set constant values without using any memory location that would take useless space bacause such values are not going to be changed along the program. It's just a way to assign a mnemnic name tos some constant values. For instance, I would like R interpreter to replace all occurrences of

...? (R-data) is a guide to importing and exporting data to and from R.? * He mirado las mailings list principales (http://www.r-project.org/mail.html), concretamente: o http://stat.ethz.ch/mailman/listinfo o http://cran.r-project.org/search.html * He buscado en el wiki (http://rwiki.sciviews.org/doku.php) * He usado help.search(), RSitesearch() y similares con diversos términos de búsqueda. * También he intentado seguir otras indicaciones del "Do your homework before posting" en http://www.r-project.org/posting-guide.html. * He usado google... * He bu...

  Hola:   Perdonad por la insistencia, pero me gustaría saber si cualquier proyecto en R debe afrontarse desde el uso de clases, o si sólo procede ante determinados casos. De ser así, ¿cuáles serían?.   Gracias.   Eva [[alternative HTML version deleted]]

...methods include Tucker, Levine observed score, Levine true score, Braun/Holland, frequency estimation, and chained equating (linear and nonlinear). Univariate and bivariate presmoothing are also supported, as is estimation of standard error via bootstrapping. Additional info can be found at the rwiki: http://rwiki.sciviews.org/doku.php?id=packages:cran:equate Suggestions are much appreciated! Thanks Tony ____________________________________________ Tony Albano University of Minnesota 193 Education Sciences Building 56 East River Road Minneapolis, MN 55455 _____________________________...

...ity of my code, other than it appears to provide correct solutions. Anyone interested in contributing alternative solutions, correcting my solutions, adding solutions for missing problems or later chapters, or adding further notes is most welcome to do so. Thanks, Tyler http://wiki.r-project.org/rwiki/doku.php?id=guides:tutorials:ecological_detective

Dear Sir/madam, I use lmer to extract model in your package of lme4. It seems works well. But the problem is when I use anova/summary the extracted model, no p-value is shown at all. In previous version(nlme), I mainly use p-value to judge which term is significant or not, and then make a decision to keep this term or not. Does it means that sth wrong with my installation of package/R? or you use