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Hello, Is this expected ? > nchar( c( "", NA ) ) [1] 0 2 Should not the second one be NA ? Romain -- Romain Francois Professional R Enthusiast +33(0) 6 28 91 30 30 http://romainfrancois.blog.free.fr |- http://bit.ly/98Uf7u : Rcpp 0.8.1 |- http://bit.ly/c6YnCi : graph gallery collage `- http://bit.ly/bZ7ltC : inline 0.3.5

Dear R People: Is there a sig for people using R and C++, please? Thank you in advance, Sincerely, Erin -- Erin Hodgess Associate Professor Department of Computer and Mathematical Sciences University of Houston - Downtown mailto: erinm.hodgess at gmail.com

Anyone know how I can highlight specific words/letters (e.g., bold, or different colour) when displaying text to the console using cat or equivalent? I can change e.g., the colour for everything by loading in a new Rconsole file, but what I really want to do is write "hello world" to the screen but with the word "world" highlighted in some way. I've searched the

Hi ! I need a plot for data extending over several orders of magnitude on the y axis. The following command generates a nice looking semi-log plot for my data: plot(x,y,log="y",type="l",lty=3, ylim=c(0.01,2),yaxp=c(0.01,1,1),las=1) I would appreciate having also minor tick marks in-between the 3 major ticks obtained with the above command. The "minor.tick" function

Hi, is there a way to define a method say '$$' that would behave like '$' and allow calls like 'a$$name'? Thanks. Renaud -- Renaud Gaujoux Computational Biology - University of Cape Town South Africa ### UNIVERSITY OF CAPE TOWN This e-mail is subject to the UCT ICT policies and e-mail disclaimer published on our website at

Hi when I call the function below in R, i get the error: Object 'pairlist' can't be converted to 'double'. #include <R.h> #include <Rdefines.h> #include <Rmath.h> SEXP CSimPoisson(SEXP lambda, SEXP tgrid, SEXP T2M, SEXP Ni, SEXP NT) { double sign, EVar; double *xlambda, *xtgrid, *xT2M, *xNi, *xNT, *xtau; SEXP tau; int ltgrid =0; int i = 0; int j = 0;

Dear Admin, I will appreciate if you advise me an effective way to write the following R code including nested for loops. I cannot do it by using expand.grid function because it results with memory allocation problems. Thanks for your time and consideration. for(d1 in 0:n){ for(d2 in 0:n){ for(d3 in 0:n){ for(d4 in 0:n){ for(d5 in 0:n){ for(d6 in 0:n){ for(d7 in 0:n){ for(d8 in 0:n){ for(d9 in

I have written code to compute multi-indices in R [1] and due to the recursive nature of the computation I need to pass around the *same* matrix object (where each row corresponds to one multi-index). As pass by reference wasn't the default behavior I declared a global matrix (mat) and used the <<- operator to write to the global matrix. So the usage would be to call genMultiIndices(3,2)

Greetings, I am trying to call simple C-code from R. I am on Windows XP with RTools installed. The C-function is #include <R.h> #include <Rinternals.h> #include <Rmath.h> #include <Rdefines.h> // prevent name mangling extern "C" { SEXP __cdecl test(SEXP s){ SEXP result; PROTECT(result = NEW_NUMERIC(1)); double* ptr=NUMERIC_POINTER(result); double t =