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Hi, I have a dataset where each case is characterized by a histogram. I would like to cluster these cases using a sensible distance measure, possibly relative entropy? Is there a way I can use R facilities to do this...

Hello, I was wondering whether a Poisson mixture modeler/cluster analysis package is available for R. I scanned CRAN packages and couldn't find anything but I thought I'd ask. If not could anyone recommend a non-R open...

Hello, Is there a specific command to clear the graphics window. On occasion I need to construct plots using commands that don't clear the graphics window (like text, lines and points etc.) -only- and hence need to clear the...

Hi, I would like to step-through a non-visible function. but apparently I don't know enough about namespaces to get that to work: > methods(predict) ... deleted lines ... [27] predict.rpart* predict.smooth.spline* [31] predict.survreg.penal* Non...

Hello all, I need to count the number of times certain characters occur in a string. The only way I have found so far to accomplish this is by using strsplit i.e. my.string <- "DDDRRHIH" my.char <- "D" num...

Hello, In Breiman papers on random forests 4 variable importance measures are described. as far as I can tell only two are available in the random forest R package. reduction in accuracy when the variable is permuted, and the mean...

Hello, I am using lattice to plot histograms of one variable conditioned on another continuous variable. for this I am using equal.count on the conditioning variable to get the appropriate shingle. I would like to have in my plot...

Martin Maechler wrote: > > >>>>> "Murad" == Murad Nayal <mn216 at columbia.edu> > >>>>> on Wed, 21 Jan 2004 15:19:28 -0500 writes: > > Murad> This might have been fixed in later versions (I am > Murad> using R1.7.0), > > yes, the bug has...

Hello, I am rather new to R. in trying to use the hist() command I get behavior that is somewhat puzzling me, in short, for a vector 'data' of about 2000 elements ranging from -1,1 I do: hist(data...

Hello, I have been getting the following intermittent error from kmeans: >str(cavint.p.r) num [1:1967, 1:13] 0.691 0.123 0.388 0.268 0.485 ... - attr(*, "dimnames")=List of 2 ..$ : chr [1:1967] "6" "49...

Hello all, since we're on the topic of R-editors. I am using emacs/ess on a unix workstation (to interact with R and have been having a little problem. I usually write the R commands I need to...

just realized that the bin value is actually the relative frequency divided by the bin width. sorry for consuming band width. Alas, is there anyway to make hist() calculate relative frequencies irrespective of bin width? thanks Murad Nayal wrote: > > Hello...

Hello, I am trying to compare two histograms using barplot. the idea is to plot the histograms as pairs of columns side by side for each x value. I was able to do it using barplot before but I can...

Hi, I am trying to refine models of a continuous response variable and a number of categorical predictor variables. I know of some model refinement tools available in R that help in the selection of model terms like dropterm and...

Hi Tyagi This seems to work, but not as C-c C-n, rather by running ess-eval-line-and-step as a command (M-x ...). Where does that C-c C-n binding occur? as in, what is the...

that was exactly what I was missing, Everything now works as advertised. Thank you all so much for the help. you just turned my already very satisfying experience using R into a even more enjoyable one. all the best Rich...

Hello all, This might have been fixed in later versions (I am using R1.7.0), r-help archive contains messages reporting similar problems but no reports of codes fixes. I have encountered a couple of problems using the silhouette...

thanks you all for the replies, it's been very helpful. regards Prof Brian Ripley wrote: > > On Mon, 23 Jun 2003, Murad Nayal wrote: > > > - what is the correct way to -remove- a component from a list. this > > seems to do...