similar to: Numerical optimisation and "non-feasible" regions

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 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 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 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

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

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,

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

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

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

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 /

Hello, Im using samba samba-1.9.18p4 on solaris 2.6. Every works fine with Win95. (browsing, file service printing) With NT file service and browsing are OK. I was wondering if its possible to print from Windows NT4 SP3 samba print services with the option public=no The printing fail silently on the NT machines. I was hoping to have a 'network password' dialog box the same way as to

Hi there, I've been using ext3 on RedHat 7.1 for some time and I'm very pleased with the result. Thanks for all the hard work people have put in it! I have however one problem: when the machine boots up it tries to load the mcd and mcdx CD-ROM drivers (AFAIK they are old non-standard CD-ROMs). It does this from rc.sysinit right after loading usb devices. The machine started to do

Dear useRs, I am pretty sure the answer to my question is out there if I would just take the time to cross-correlate information that's scattered among different email exchanges, useR! presentations, Paul Murrel's website and assorted posters, but would some charitable soul be so kind as to explain the step by step procedure for having Sweave produce Lattice graphics with Computer Modern

Hello, Does anyone have done a setup of the samba server in such way that the user on a Windows NT4 client must enter his/her username/password to use a printer service ? Is that possible? I manage to have this working with Win95 with the option public=no but it does not seems to work for NT. The goal is to have a control of the printer usage. (accounting) I'm controlling the samba servers

Dear useRs, How does one include graphics created with Xfig with LaTeX fonts into Sweave? If I create a graphic with Xfig with some Computer Modern fonts, I choose to export it as combined PDF and LaTeX. So I get two files, one foo.pdf with the drawings without the text and foo.pdftex with some LaTeX code that ensures the text lands in the right place together with the drawing. I'm supposed

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

Does anyone knows if there is a way to handle sparse matrices in R? More precisely I am looking for a way to do correspondance analysis on a contingency table which is quite huge (1,000 x 10,000) but sparse (i.e. full of zero). Creating it directly in R (eg as x <- array(0,c(1000,10000) then filling the non zero cells) seems definitely not the good solution as R is then unable to process it