search for: nwew

Dear R-helpers, The function optim implements algorithms that I would like to use. I have function implemented in R, which given the parameters of which minimization is to take place returns a scalar as well as the gradient. Unfortunately optim requires two function _fn_ and _gr_ where fn returns the function value and gr the gradient. Splitting my function in two functions would be easy,

Dear R-developers, Using .Call I pass a S4 class with e.g. the following class definition: setClass("mmatrix",representation( data="matrix") ) On the "C side" i do mat = GET_SLOT(vs,install("data")); and then: printf("%f\n",NUMERIC_POINTER(mat)[1]); The above print statement produces the correct output if xx<- new("mmatrix")

...9),pch=".",cex=2) } ) dim(xx) [1] 680237 2 unique(xx[,1]) [1] 500-530 1000-1110 2000-2200 3400-3700 Levels: 500-530 1000-1110 2000-2200 3400-3700 It means that actually four small qqplots are drawn. The problem is that the generated pdf is extremely large. -rw-r--r-- 1 nwew bayes 19734746 2005-08-27 15:38 Distr-qqplot.pdf Suggestions howe to reduce the size but keep the quality are wellcome. cheers Eryk

Dear R gurus. Is there an R function equivalent to octaves / (Right division) withouth forming the inverse of Y' using solve ? [snip - from octave docu] Right division. This is conceptually equivalent to the expression (inverse (y') * x')' but it is computed without forming the inverse of Y'. If the system is not square, or if the coefficient matrix

Dear R-users, I have the following data x <- runif(300,min=1,max=230) y <- x*0.005 + 0.2 y <- y+rnorm(100,mean=0,sd=0.1) y <- y%%1 # <------- modulo operation plot(x,y) and would like to recapture the slope (0.005) and intercept(0.2). I wonder if there are any clever algorithms to do this. I was looking at the function lm.cirucalar. Is this the method to use? If, which of the

Dear R-developers, I am working on an C interface to some c functions. I compiled the c file using R CMD SHLIB without any compilation errors. All libs used are added to the LD_LIBRARY_PATH. However dyn.load("interface.so") produces undefined symbol: N_VNew_Serial; which is defined in one of the libs I link against. Where, and how to start searching for the error? Eryk

...checking Rd files ... OK * checking for missing documentation entries ... ERROR Error: .First.lib failed for 'SBMLodeSolveR' Help is highly appreciated. Eryk Witold Eryk Wolski University of Newcastle upon Tyne School of Mathematics and Statistics Merz Court http://www.mas.ncl.ac.uk/~nwew http://www.northeasttango.org.uk

...on? Yours Eryk -- Witold Eryk Wolski __("< School of Mathematics and Statistics _ \__/ University of Newcastle 'v' || Newcastle upon Tyne, NE1 7RU, ENGLAND / \ ^^ mail: witek96 at users.sourceforge.net m m http://www.mas.ncl.ac.uk/~nwew http://www.northeasttango.org.uk

Dear R-developers, I am getting the following error message (see bottom of e-mail) and can't make a clue out of it. The zzz.R file contains .First.lib <- function(lib, pkg) library.dynam("SBMLodeSolveR",pkg,lib) .Last.lib <- function(libpath) library.dynam.unload("SBMLodeSolveR", libpath) There is a SBMLodeSolveR.so file in the src directory which works if loaded

Dear R-developers, I am trying to reproduce the autoconf.ac example from R-ext and fail. My autoconf file looks like this [autoconf.ac] # original by Friedrich Leisch, much changed by BDR AC_INIT([SBMLodeSolveR]) dnl Select an optional include path, from a configure option dnl or from an environment variable. AC_ARG_WITH([sbmlode-include],