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On 15 September 2017 at 14:13, Duncan Murdoch <murdoch.duncan at gmail.com> wrote: > On 15/09/2017 8:11 AM, Martin M?ller Skarbiniks Pedersen wrote: > >> Hi, >> >> I am installing a lot of packages to a new R installation and it takes >> a >> long time. >> However the machine got 4 cpus and most of the packages are written in >> C/C++. >> >> So is it possible to...

In line On 15/09/2017 13:30, Martin M?ller Skarbiniks Pedersen wrote: > On 15 September 2017 at 14:13, Duncan Murdoch <murdoch.duncan at gmail.com> > wrote: > >> On 15/09/2017 8:11 AM, Martin M?ller Skarbiniks Pedersen wrote: >> >>> Hi, >>> >>> I am installing a lot of packages to a new R ins...

Martin, You are making your life way too complicated. There are a number of things I would do differently: 0) Wrong list. Rcpp has its down, rcpp-devel, and I basically do not read this and would have missed this were it not for luck. On 3 December 2017 at 02:06, Martin M?ller Skarbiniks Pedersen wrote: | I have read some web-pages about Rcpp and C++ but it is a bit confusion | for me. 1) Keep reading. | And I compile it like this: | PKG_CXXFLAGS=$(Rscript -e 'Rcpp:::CxxFlags()') \ | PKG_LIBS=$(Rscript -e 'Rcpp:::LdFlags()') \ | R CMD SHLIB logistic_map.cpp |...

Hi, I have written a small C++ function and compile it. However in R I can't see the function I have defined in C++. I have read some web-pages about Rcpp and C++ but it is a bit confusion for me. Anyway, This is the C++-code: #include <Rcpp.h> using namespace Rcpp; // [[Rcpp::export]] List compute_values_cpp(int totalPoints = 1e5, double angle_increment = 0.01, int radius =

Dear all, I am trying to learn functions in R and 3D plotting so I decided to try to plot the famous bad PRNG Randu from IBM(1). However something is not correct in the function I have created. First I define the function RANDU like this: > RANDU <- function(num) { return (65539*num)%%(2^31) } and test that it works for a seed of 1: > RANDU(1) [1] 65539 but if I want the next

On 02/01/2018 6:38 PM, Martin M?ller Skarbiniks Pedersen wrote: > Hi, > > I am trying to understand S3 classes. I have read several tutorials about > the topics but I am still a bit confused. I guess it is because it is > so different from > Java OOP. What you do below isn't S3. S3 is a system where the classes are...

..., but I still cannot confirm on ... sudo docker run -v $(pwd):/home/work/ -w /home/work --rm -ti rocker/r-ver:3.5.1 Could you please read the comments within the "Cairo Fonts" section of the ?X11 help page, in case that offers some explanation. Paul On 29/08/18 02:15, Martin M?ller Skarbiniks Pedersen wrote: > On Fri, 24 Aug 2018 at 19:53, Edzer Pebesma > <edzer.pebesma at uni-muenster.de> wrote: >> >> In plotmath expressions, R's degree symbol, e.g. shown by >> >> plot(1, main = parse(text = "1*degree*C")) >> >> has sunk to...

Hi, I am trying to understand S3 classes. I have read several tutorials about the topics but I am still a bit confused. I guess it is because it is so different from Java OOP. I have pasted my attempt at creating a bank-account class below and my problems are: 1. What should be added some plot.default() calls the account$plot() method ? 2. What should the account$plot() be implemented to

Hi, I am installing a lot of packages to a new R installation and it takes a long time. However the machine got 4 cpus and most of the packages are written in C/C++. So is it possible to add a -j4 flag to the make command when I use the install.packages() function? That will probably speed up the package installation process 390%. Regards Martin M. S. Pedersen [[alternative HTML

On 15/09/2017 8:11 AM, Martin M?ller Skarbiniks Pedersen wrote: > Hi, > > I am installing a lot of packages to a new R installation and it takes a > long time. > However the machine got 4 cpus and most of the packages are written in > C/C++. > > So is it possible to add a -j4 flag to the make command when I us...

On 3 December 2017 at 20:19, Dirk Eddelbuettel <edd at debian.org> wrote: Hi Dirk, Thanks for your answers. I got a few more questions. > > 0) Wrong list. Rcpp has its down, rcpp-devel, and I basically do not read > this and would have missed this were it not for luck. OK. I did found the rcpp-devel mailing-list. But I though it was a developers of the rcpp-package. So it is ok

On 3 January 2018 at 00:52, Duncan Murdoch <murdoch.duncan at gmail.com> wrote: > On 02/01/2018 6:38 PM, Martin M?ller Skarbiniks Pedersen wrote: >> >> Hi, >> >> I am trying to understand S3 classes. I have read several tutorials >> about >> the topics but I am still a bit confused. I guess it is because it is >> so different from >> Java OOP. > > > What you do belo...

Thanks for that information. However how can I use R to directly get data from that API? On Fri, Jun 1, 2018 at 8:36 PM Martin M?ller Skarbiniks Pedersen < traxplayer at gmail.com> wrote: > On 1 June 2018 at 15:08, Christofer Bogaso <bogaso.christofer at gmail.com> > wrote: > > Hi again, > > > > I use the *webshot* package to take snapshot from Webpage. However, when > I > > try to take snapsho...

On 8 September 2017 at 11:25, PIKAL Petr <petr.pikal at precheza.cz> wrote: > > Moller Skarbiniks Pedersen > My program which is slow looks like this: > > > > filename <- "digits.txt" > > lines <- readLines(filename) > > why you do not read a file as a whole e.g. by > > lines<-read.table("digits.txt") > Good idea. > > An...

Hi Martin, The corrected function would be RANDU <- function(num) { return ((65539*num)%%(2^31)) } You forgot the brackets for the return function. Hence, what was returned was always (65539 * num) On Mon, Aug 14, 2017 at 12:49 PM, Martin M?ller Skarbiniks Pedersen <traxplayer at gmail.com> wrote: > Dear all, > > I am trying to learn functions in R and 3D plotting so I decided to try > to plot > the famous bad PRNG Randu from IBM(1). > However something is not correct in the function I have created. > First I defin...

Please look at ?datasets::randu for David Donoho's translation of RANDU into R. On Mon, Aug 14, 2017 at 12:49 PM, Martin M?ller Skarbiniks Pedersen <traxplayer at gmail.com> wrote: > Dear all, > > I am trying to learn functions in R and 3D plotting so I decided to try > to plot > the famous bad PRNG Randu from IBM(1). > However something is not correct in the function I have created. > First I defin...

Hi, I am trying to create my first R package. I will later today put the files on Github. However I gets this error and I can't find any reason for it: R> roxygen2::roxygenise() First time using roxygen2. Upgrading automatically... Error in x$tag : $ operator is invalid for atomic vectors R> Any ideas? Regards Martin M. S. Pedersen [[alternative HTML version deleted]]

Hi, Every day I try to write some small R programs to improve my R-skills. Yesterday I wrote a small program to read the digits from "A Million Random Digits" from RAND. My code works but it is very slow and I guess the code is not optimal. The digits.txt file downloaded from https://www.rand.org/pubs/monograph_reports/MR1418.html contains 20000 lines which looks like this: 00000

> On 8 Sep 2017, at 15:51 , Martin M?ller Skarbiniks Pedersen <traxplayer at gmail.com> wrote: > > On 8 September 2017 at 14:37, peter dalgaard <pdalgd at gmail.com> wrote: >> >> >>> On 8 Sep 2017, at 14:03 , peter dalgaard <pdalgd at gmail.com> wrote: >>> >>> x <- scan("~/Do...

.Call("compute_values_cpp") Also, if you were passing arguments to the C++ function you would need to declare the function differently. Do a search on "Rcpp calling C++ functions from R" HTH, Eric On Sun, Dec 3, 2017 at 3:06 AM, Martin M?ller Skarbiniks Pedersen < traxplayer at gmail.com> wrote: > Hi, > > I have written a small C++ function and compile it. > However in R I can't see the function I have defined in C++. > I have read some web-pages about Rcpp and C++ but it is a bit confusion > for me. > > A...