similar to: Help creating the IBM Randu function

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

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

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, 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 =

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

Hi, I am trying to make my first R package containing only a single data.frame and documentation. All code can be found at: https://github.com/MartinMSPedersen/folkeafstemninger When I check the package I get four warnings. I will list all warnings in this email because they migth be connected. 1. * checking if this is a source package ... WARNING Subdirectory ?src? contains:

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.

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

Here are the beginning of a R program. I hope it can help you writing the rest of the program. Regards Martin M. S. Pedersen ---- filename <- "university.data" lines <- readLines(filename) first <- T for (ALine in lines) { ALine <- sub("^ +","",ALine) ALine <- sub(")","",ALine, fixed = T) if

.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.

> 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("~/Downloads/digits.txt") >>> x <-

Full_Name: Andrew J. Baczkowski Version: 1.1.1, 1.5.0 OS: NT, unix Submission from: (NULL) (129.11.159.161) Help documentation for randu() has incorrect R code in Example. Should replace line 4 seed <<- ((2^16) + 3) * seed) by seed <<- ((2^16) + 3) * seed) %% (2^31) -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- r-devel mailing list -- Read

Hi, I think and hope this a good place to ask for code review for a R beginners? I have made a R script which generates a dataset based on 2009 danish referendum and it does work. But I think the code could be better and I would any comments how the code can be improved. At least I would like to know how I avoid converting several of the columns to factors in the end of the code?

Some mistake: > I expect this output: [1] 100 Martin Saldo is: 100 but I get [1] 0 Martn Saldo is: 0

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 snapshot from* https://www.coinbase.com/ > <https://www.coinbase.com/>*, this fails to take the full snapshot of that > page. Yes, that is a general problem with many webshot

Hi again, I use the *webshot* package to take snapshot from Webpage. However, when I try to take snapshot from* https://www.coinbase.com/ <https://www.coinbase.com/>*, this fails to take the full snapshot of that page. I tried following : > library(webshot) > webshot("https://www.coinbase.com/", 'aa.pdf') However in the pdf page, I done see the quotes which are

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("~/Downloads/digits.txt") > > x <- x[-seq(1,220000,11)] > > ...and, come to think of it, if you really want the 1000000 random digits: > > xx <-

On 3 December 2017 at 05:23, Eric Berger <ericjberger at gmail.com> wrote: > > Do a search on "Rcpp calling C++ functions from R" > Thanks. However search for "Rcpp calling C++ functions from R" gives a lot of result but I think some of them are outdated and others don't agree with each other. Can you point to a specific good on-line guide for me? Regards

> On 8 Sep 2017, at 14:03 , peter dalgaard <pdalgd at gmail.com> wrote: > > x <- scan("~/Downloads/digits.txt") > x <- x[-seq(1,220000,11)] ...and, come to think of it, if you really want the 1000000 random digits: xx <- c(outer(x,10^(0:4), "%/%")) %% 10 -- Peter Dalgaard, Professor, Center for Statistics, Copenhagen Business School Solbjerg

Hi, subject more or less says it all. I freely admit to not having bothered to find some of the online papers about method of testing the quality of random number generators -- but in an idle moment I wondered what to expect from something like the following: randa<-runif(1000) randb<-runif(1000) t.test(randa,randb)$p.value var.test(randa,randb)$p.value [repeat ad nauseum] Is the