similar to: Resource for learning C/R interface

Hi all, Suppose I have a matrix of logical value: x<-matrix(c(TRUE,FALSE,TRUE,FALSE,TRUE,FALSE,TRUE,FALSE,TRUE),nrow=3) I would like to change the value of FALSE to 0 and TRUE to 1. An obvious way to do it is : y<-as.numeric(x) However this method doesn't keep the dim of x. I also need to copy the dim information to y too. attributes(y)<-attributes(x) Is this a correct way to do

Hi all, Within a foreach loop with doSNOW, we cant call functions which come from the non-default package. We need to load(require/library) the package once more within the foreach loop. Anyone knows why would happen like this? Is it caused by the snow package and something happened when "snow" parallelize the job? Other than load the package once more with in the foreach loop, is

Hi all, Is there any way for me to to string in the argument of qplot or ggplot? for example qplot(x='carat',y='price',data=diamonds,geom=c('point','smooth')) instead of qplot(x=carat,y=price,data=diamonds,geom=c('point','smooth')) Thanks!! Regards, TszKin Julian [[alternative HTML version deleted]]

Hi All, I've been struggling on that one for a couple of days. I've tried several things, but nothing is worth publishing. I'm working with a bird nests data frame for which I have a laying date (LD) and a fledgling date (FD) (in calendar Julian date) by nest id. For the period spanning between LD and SD, the nest is termed "active". Each nest id occur once in the data

Depending on your application, I'm not sure there's much point in being an "advanced R programmer" these days. Become an adequate R programmer, and learn C++ and Rcpp. Do basic data mashing in R, then do all your intensive stuff in C++ with Rcpp. Eventually you'll probably get to the point where you can express yourself in C++ as fast as you can in interpreted R, with the

On Wed, 14 Mar 2018, Barry Rowlingson wrote: > Depending on your application, I'm not sure there's much point in being an > "advanced R programmer" these days. Become an adequate R programmer, and > learn C++ and Rcpp. Do basic data mashing in R, then do all your intensive > stuff in C++ with Rcpp. Eventually you'll probably get to the point where > you can

Hello, I have a simple (?) simulation problem. I'm doing a simulation with logistic model and I want to reapet it 600 times. The simulation looks like this: z <- 0 x <- 0 y <- 0 aps <- 0 tiss <- 0 for (i in 1:500){ z[i] <- rbinom(1, 1, .6) x[i] <- rbinom(1, 1, .95) y[i] <- z[i]*x[i] if (y[i]==1) aps[i] <- rnorm(1,mean=13.4, sd=7.09) else aps[i] <-

Hej, Calling newuoa (from the minqa package) makes R crash when the package rgl is loaded first. This however only on certain selected data. The data used for testing (saved to 'bugs.R'): xvals = c(1,2,4,5,7,8,9,10,11,12,14,15,16,18,19,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36) yvals =

Hi all, a user contacted me about a segfault when installing WGCNA package dowloaded from CRAN. I also see a segfault like that on certain installs of R. The package passes all CRAN checks, so presumably this has something to do with the R installation or environment. The R versions here are not the newest but I would guess that this is not an R version issue. I'm attaching two

XCP Users: I received an email from Alberto Gonzalez Rodriguez who created OpenXenCenter/OpenXenManager and is now working on OpenXenWebManager. Info to access the tool is: steps to test are: download from http://bit.ly/bres2U uncompress: tar xvfz xenwebmanager_rev24_full.tar.gz cd xenwebmanager python frontend.py and with a browser open http://localhost:8080 (or http://ip:8080) you need

Dear List, I’d like to modify the R rpart package source code to add a new split criterion. I’m familiar with R, but not at all with C or C++. I understand C and C++ are quite different, and I don’t have the time to learn both, so my questions are (i) which one should I learn for the specific task mentioned above? (I understand rpart routines are written in C, but want to check this), (ii) more

Hi, I am unable to install tibble, a required package for ggplot2 in R. I am running R (version 3.3.2 ) in RStudio (version 1.0.44). My OS is ubuntu 14.04 (64 bits). I get the same error when running R from the terminal. Any help would be gretly appreciated. Kind regards, Terje **************** Error messages: **************** install.packages("tibble") Installing package into

XCP Users: As many of you are aware, there are several open source products available for everyone to use when working with XCP. I would like to get some feedback on the various tools to get a feeling on how people are using XCP and these tools. Here are the tools that I am aware of (please respond if you are using another tool): * OpenXenManager -

I am running into a wall getting my system to work with rcpp and inline. Following Dirk's advice on stackoverflow, I hope someone is able to help me. My steps were to install MinGW 32 bit first, then installing Rtools, I disabled MinGW's entry in the PATH. I am trying to get the following code to work: library(Rcpp) library(inline) body <- ' NumericVector xx(x); return wrap(

Hello My colleagues asked me to install "R" with module "shiny". R version 3.0.1 compiled fine on Solaris 10 and is running well. I tried to install "shiny". With the dependencies "Rcpp" should be installed before. But the compile step did fail. See below. The initial error message is "Error in dyn.load(file, DLLpath = DLLpath, ...) :"

Hi, Im not sure if this is the right place to post this. I am using Xubuntu Karmic Koala and am trying to use the Rcpp package. I am testing it using a simple code that takes in a vector and adds 1 to each element: #include <Rcpp.h> // This file takes in a vector and adds one to each entry RcppExport SEXP addone(SEXP vec){ // create a local copy of vec Rcpp::NumericVector

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 =

Hello My colleagues asked me to install "R" with module "shiny". R version 3.0.1 compiled fine on Solaris 10 and is running well. I tried to install "shiny". With the dependencies "Rcpp" should be installed before. But the compile step did fail. See below. The initial error message is "Error in dyn.load(file, DLLpath = DLLpath, ...) :" Before

Hello, I'm currently working on making Rcpp use the feature described here more: http://cran.r-project.org/doc/manuals/R-exts.html#Linking-to-native-routines-in-other-packages To give more context, Rcpp has for a long time built what we called "the Rcpp user library", i.e. a library we could link against user the linker. We were then producing appropriate linker flag with

Dear R-Developers, I just started learning how to use Rcpp. Earlier while using it, I encountered an error as shown below: file74d8254b96d4.cpp: In function ‘Rcpp::NumericVector foo(Rcpp::NumericVector, Rcpp::NumericVector, Rcpp::NumericVector, Rcpp::Function, Rcpp::Function)’: file74d8254b96d4.cpp:10: error: invalid operands of types ‘SEXPREC*’ and ‘R_len_t’ to binary ‘operator/’ make: ***