similar to: embedding R in c++ (Qt) application

Hi all, My application usually works on huge amounts of data in the size of MB's .So the performance of "R" in this case will increase if Huge pages are used instead of malloc'ing (as in memory.c) . So Are there any methods to support Huge Pages in "R" ? Can any one give some inputs to help me implementing this feature? [[alternative HTML version deleted]]

Hi all, My application usually works on huge amounts of data in the size of MB's .So the performance of "R" in this case will increase if Huge pages are used instead of malloc'ing (as in memory.c) . So Are there any methods to support Huge Pages in "R" ? Can any one give some inputs to help me implementing this feature? [[alternative HTML version deleted]]

Hi R, Can we download Reuters (3000 Xtra) data from R? Does ODBC package help me in this? Or otherwise, is there a way to extract daily closing prices data of Reuters from R? Thank you very much, Shubha This e-mail may contain confidential and/or privileged i...{{dropped:13}}

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Hi, I'm writing a C function that has to call a R function with multiple arguments. I've read the relevant section in Writing R Extensions, and searched the R site, mailing lists as well as rseek. I managed to call the function, but I'm now having trouble creating the argument list. I tried to create a pairlist of the arguments and send it to the R function. The R function however

Hi all Does anyone know if it is possible when plotting a line or scatter plot, to selectively color the data points based on the data value? i.e. if plotting say the percentage change in stock price movements, to color +ve points in green and -ve points in red? And extending this to a user-defined range of colors based on the quartile of the data points? Thanks Rory Rory Winston RBS Global

I''m trying to attach effects to elements in my onload handler and my lack of Javascript-fu is showing... I want to call the effect from the onclick handler of an anchor inside the div I want the effect to apply to. Here''s what I''m trying to do: function doOnLoad() { var filters = document.getElementsByName(''filter''); for

Hi all (I'm sure this question has been asked before, but I cant find it). If I have two character vectors: > x <- c("aaa","bbb","ccc") > y <- c("1","2","3") How can I get the cartesian product of the string values? > expand.grid(x,y) Gives me a data frame with separate columns...however, I cant seem to get *apply

Has anyone done much work with server-side push and AJAX/J? (XML or JSON) As best I can tell, the ideal solution to this would be the multipart/x-mixed-replace MIME type. Mozilla''s XMLHttpRequest now has support for this, so this is on people''s minds, but how to make it work on the server end? You have to keep a connection open.....and a process on the server to go with it.

Hi all, I encountered a big problem when trying to use Scriptaculous and Htmlarea in the same page. The Htmlarea code uses a lot of "for (var i in array_variable)" to iterate on array elements. Problem is that prototype.js augments Array.prototype, which then show up in the iteration, severely breaking htmlarea. The easy workaround is for sure to use "for (var i = 0; i <

I know that the prototype library was paired with Rails but I''m curious if anyone has used the ajax part (of the libraries) with java servlets? If so could you please point me to some examples or documentation. Cheers, Marty

often when I "try to" visit the scriptaculous, it crashes IE - does anybody else experience this as well? _________________________________________________________________ FREE pop-up blocking with the new MSN Toolbar – get it now! http://toolbar.msn.click-url.com/go/onm00200415ave/direct/01/

Hey Guys, I know this isn''t specific to scriptaculous libraries but it''s something that I''m exploring as I use the ajax functions in prototype. My application server is not rails but java and I was thinking of returning a javascript array in the ajax response. When I get back my response is it, of course, text and I''m not sure how best to convert it into

Hi all If I have a string, say "ABCDA", and I want to convert this to the sum of the letter values, e.g. A -> 1 B -> 2 etc, so "ABCDA" = 1+2+3+4+1 = 11 Is there an elegant way to do this? Trying something like which(LETTERS %in% unlist(strsplit("ABCDA", ""))) is not quite correct, as it does not count repeated characters. I guess what I need is

Hi all Here is a rather naive implementation of the SEPA algorithm for generating lexical permutations: lexperm3 <- function(x, n=length(x)) { perms <- list() k <- 1 perms[[k]] <- x k <- k + 1 for (y in 1:(factorial(n)-1)) { i <- n-1 while (x[i] > x[i+1] && i > 0) { i <- i - 1 } # i is largest index st x[i] > x[i+1] j <- n #

Dear All, I've read the manual on "Writing R Extensions" and in particular the part on calling R from C. (Most of the manual is about calling C from R, not the other way around.) The good news is that I can now call _some_ R from C, specifically the R functions which have C header files. However it isn't clear to me how to call R functions that are written in R. I

Hi I have a data frame which looks like the following (it is a table of commit logs to a source repo). The Author column is treated as a factor, by virtue of stringsAsFactors being set to TRUE, so I can extract the number of commits per author by using table(logs$Author). Is there an elegant way to extract all subsets of this frame by the Author column - i.e. that returns say a list of data

Hi folks, I''m putting together a site that will have a shopping cart tab along the top which, when clicked, slides down to reveal the full contents of the cart (covering the page underneath it). When designing it and getting the styling right, I had the page display the cart fully open by default. This worked fine - the cart can close and open any number of times without problem[1].

Dear R-help, how could I create an R call in C code using lang2 with 2 and more arguments? I tried this code: SEXP f(SEXP fn, SEXP rho) { SEXP R_fcall, x, y; PROTECT(R_fcall = lang2(fn, R_NilValue)); PROTECT(x = allocVector(REALSXP, 1)); PROTECT(y = allocVector(REALSXP, 1)); REAL(x)[0] = 10; REAL(y)[0] = 20; SETCADR(R_fcall, x); SETCADR(R_fcall, y);

All I realise that this isn''t strictly the correct place to discuss the prototype lib but being as scriptaculous is dependent on it I thought people might have some opinions. Easier to explain with the example below, copy into a html file and ensure the path to prototype.js is correct. You''ll see the first example prints an extra element "extend" when iterating over