similar to: Extending R formulas

Dear list, Here's a suggestion about the different optimization code. There are several optimization procedures in the base package (optim, optimize, nlm, nlminb, ..). However, the output of these functions are slightly different. For instance, 1. optim returns a list with arguments par (the estimates), value the minimum (maxima) of the objective function, convergence (optim

Dear list, I'm currently writing a C code to compute the (composite) likelihood - well this is done but not really robust. The C code is wrapped in an R one which call the optimizer routine - optim or nlm. However, the fitting procedure is far from being robust as the parameter space depends on the parameter - I have a covariance matrix that should be a valid one for example. Currently,

Dear list members, I've got a small question on matrix multiplications in a C code. Because of a really cpu demanding likelihood, I had to use a C code within an R function wrapper. I'm pretty sure that there is already one good code for matrix multiplication in C - maybe in the R source code itself - but I wasn't able to find it. Anyone as an idea on how to handle matrix

Dear all, I'm currently experiencing big troubles with my C code called by .Call in a R function. I know this may not be the right place for such things but these errors are driving me crazy. And I hope other people may have already experienced these problems so that they could give me good suggestions. Sorry if I'm completely out of topic. Well let's go... I'm writing a

Dear all, I'd like tweaking the ... arguments that one user can pass in my function for fitting a model. More precisely, my objective function is (really) problematic to optimize using the "optim" function. Consequently, I'd like to add in the "control" argument of the latter function a "ndeps = rep(something, #par)" and/or "parscale =

Dear list, I got an automatic email complaining than some of my packages didn't pass 'R CMD check' for R-2.10.0 alpha anymore. Both of them make use of the "cases" LaTeX environment. Inspecting the log outputs I got: LaTeX errors when creating PDF version. This typically indicates Rd problems. LaTeX errors found: ! Misplaced alignment tab

Has your environment variable path been set correctly? It's been a while that I'm not using R under windows but remember had experienced the same error. I remember that I had to put many paths as environment variable to build R packages properly. Best, Mathieu wolpert at stat.duke.edu a ?crit : > Hi, R team. > > I'm trying to build a dll from a c program to be invoked

Hi, I'm starting to see more and more duplicates in my cur directory. they seem to be a copy of an incoming mail (messages share the same date) but they appears in the client as a message without subject and without sender or body. Their filename starts with an underscore and the 4th letter is a %. The rest of the filename is random (but it also includes my hostname). Which program could

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I think most of us would expect prod(0:1000) to return 0, and ... ... it does. However, many of us also expect prod(x1, x2) to be equivalent to prod(c(x1,x2)) the same as we can expect that for min(), max(), sum() and such members of the "Summary" group. Consequently, prod(0, 1:1000) should also return 0, but as you see, it gives NaN which may be a bit puzzling... The

Hello, With the updated firefox (and freetype) I can't see svg files: ? This XML file does not appear to have any style information associated with it. ? While, if installing firefox 1.5.0 from the official site, svg files display without trouble. What could be the reason for that? Anne -- Anne Possoz, Domaine IT-GE Espace logiciel libre ? l'Ecole Ecole Polytechnique

Respected All, I am writing a program in R and facing some problem with applying "if statment". Program first draw random numbers from bivariate normal distribution then compute variable say Pi and Pij from that sample and then further computation ..... ..... ..... In some samples Pij is appearing with negitive sign and ultimately resulted in an negative variance estimator.

Help! I was running R code and started getting error messages that would not stop repeating. I force-quit R, but when I attempted to run it again, it would not start (Icon kept bouncing until I force-quit again). I restarted the computer, then I reinstalled R, but that did not fix the problem. I deleted everything I could find related to R, and installed again. Each time I install I

I'm in the process of coding a parser (in C) to generate R entities (vectors, lists, etc.) from a text description (different from R). The basic parser works, and now I need to tell it how to create R entities. I need to be able to create character vectors (for unicode strings), integers, floats, unnamed lists, named lists, boolean values, and NA. With the exception of the two types of lists

Hi the list, I need to include some C code in R, but the behavior of the C code is strange : Here is my code : --- 8< --- Rprintf("\n XXXX mTraj=%f mClus=%f",mTraj[i+nbId*c],mClustersCenter[j+nbClusters*c]); Rprintf("\nDistA=%d Tmp=%d",dist,tmp); tmp = mTraj[i+nbId* c] - mClustersCenter [j+nbClusters* c]; Rprintf("\nDistB=%d

Dear all, there seems to be a problem with displayed legends when a multiple figure environment is used, see the following example: par(mfrow=c(1,2)) curve(dnorm,col=4,from=-4,to=4); legend(-4,0.3,legend="curve",lty=1,col=4) legend(-4,0.2,legend="curve",lty=1,col=4) On my machines the first time the command legend() is issued the legend box stretches over the curve.

Hello there, I got a small problem about logical calculation: we can get a sequene from a+b as below: > a<-c(1,2) > b<-c(3,4) > a+b [1] 4 6 but when the sequences are logical. (I want to get (True,False) && (True, True) ==> (True, False), but when I do as below. > e<-c(T,T) > f<-c(F,T) > e [1] TRUE TRUE > f [1] FALSE TRUE >

Deal all, new as I am to developing packages for R-Project, I apologize on beforehand for questions that are too obvious. I am trying to 'add' a PDF document containing some detailed information to a package. The way I understand the Rexts.pdf document, I should add my .PDF document to the /inst/doc/ folder, and links to the files should be build automatically. However, after

Hello, I have difficulties in finding why I cannot load a custom R package in Linux (Suse 10). When I run R CMD check for a package source folder I get the following message: "..... Error in dyn.load(file, ...) : unable to load shared library '/home/yarz/projects/Riman/Riman.Rcheck/Riman/libs/Rimanlib.so': /home/yarz/projects/Riman/Riman.Rcheck/Riman/libs/Rimanlib.so: undefined

Full_Name: N. Srinivasan Version: R-2.10.1 OS: Ubuntu 9.10, 64 bits Submission from: (NULL) (68.110.238.141) ,/configure runs fine. But there is no make file mentioned in the INSTALL file. Usually this kind of information is provided in the README file. I am a donor to the R Foundation. Ubuntu uses the Synaptic. It only installs the R version 2.9.0 So, I have to compile R-2.10.1 from the