similar to: Matrix multiplication in a C code

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 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, 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 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 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

Dear list, I'm currently trying to write a new R package to model spatial extremes. In particular, for a model fitting procedure, I'd like to use flexible response surfaces (like linear models, splines, ...) for the parameters of my model. Following this idea, I'd like to allow "a new interpretation" of an R formula given by the user, like y ~ x1 + rb(x2, knots,

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

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'm making the move of the survival package from my own environment to, and have stumbled into a vacuum. The R Extensions manual has really nice instructions about how to lay out the directories, order the files, and run tests for DISTRIBUTION of a product, but I can't find anything on how to set up a reasonable DEVELOPMENT environment. In my local world, I had the .c and .s files in

Dear all, Now that R has OpenMP facilities, I'm trying to use it for my own package but I'm still wondering if it is safe to use random number generation within a OpenMP block. I looked at the R writing extension document both on the OpenMP and Random number generation but didn't find any information about that. Could someone tell me if it is safe or not please ? Best, Mathieu

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, I've sucessfully compiled 2.05a for Solaris 2.6 and its working OK. Compiling on Solaris 2.5.1 (with gcc or Sun cc) goes smoothly but smbd fail with the following error in the log: [1999/10/21 09:45:30, 0] lib/util_sock.c:(507) read_socket_data: recv failure for 4. Error = Invalid argument Same debug level 10 [1999/10/21 11:47:03, 2] smbd/server.c:(716) Changed root to /

Dear R experts, R (0.63) does not seem to write me any text in a PS file. Trying x11() plot(12) text(5,5, "Hello World") works fine. Now I would like to have the same as a PS file. postscript("foobar.ps") plot(12) text(5,5,"Hello World") dev.off() Gives me a PS file with the plot -- but without the "Hello World". Why? I'm completely clueless. Ciao

Good Morning ! I am trying to run R on MacOS X using XFree86 4.2.0 when I try to run it, I get the following error message "dyld: /usr/local/lib/R/bin/R.bin version mismatch for library: /sw/lib/libpng.2.dylib (compatibility version of user: 1.0.12 greater than library's version: 1.0.10) ". I hope you have some ideas what the problem is and how I can fix it. thanks for your

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

Dear All I new to using R and am struggling with some matrix multiplication. I have two matrices, one containing random numbers, these are multiplied together to get another matrix which is different each time. When I put in another for loop to repeat this process a multiple times the matrices are all the same. I?m sure there is a way to keep the randomness of the different matrices but I think

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 there, First of all thanks for all the ext3 development! I run it on my laptop and it has saved me many times from lengthy fscks :-) However, I have observed that whenever something is doing a lot of writing to an ext3 filesystem other processes that involves I/O on the same disk are blocked for long times (often in the 10-30 secs range). For example, if I cp a 1.5 Gb file from one ext3