similar to: passing a 2D array from Java to R

I haven't had time to try using R for over a year, but have a colleage who wants to. We work with time series and our current version of our calendar-time subroutines in java converts both directions between linear time and calendar. We have used calendar time since year 1965 starting out then with Fortran. Calendar time can be CnYrMoDa | CnYrMoDaHr | CnYrMoDaHrMn | CnYrMoDaHrMnSc |

After some trial and error I figured out how to pass matrices from R to java and back using rJava, but this method is not documented and I wonder if there is a better way? Anyway, here is what I found works: (m = matrix(as.double(1:12),3,4)) [shows m as you would expect] jtest <- .jnew("JTest") (v <- .jcall(jtest, '[[D], 'myfunc', .jarray(m), evalArray=FALSE)) [shows

Bare test code: My simple Java test class source and R test code follow: public class RJavTest { public static void main(String[]args) { RJavTest rJavTest=new RJavTest(); } public final static String conStg="testString"; public final static double con0dbl=10000001; public final static double[]con1Arr=new double[] { 10001,10002,10003,10004,10005,10006 }; public final static

Dear R-Help, I am trying to get JRI (the rJava interface allowing Java to connect to R) to work. I was able to run it a week ago when I was doing some testing using Java 1.5. However, I am developing a GUI application using some of the new Java 1.6 features and I just can't get JRI to work with this setup. Here is what I get: Cannot find JRI native library! Please make sure that the JRI

When running [1] "R version 2.15.1 (2012-06-22)" "x86_64-pc-mingw32", rJava fails. I have installed both the 32-bit and 64-bit versions of Java 7 update 9. > library(rJava) Error : .onLoad failed in loadNamespace() for 'rJava', details: call: stop("No CurrentVersion entry in '", key, "'! Try re-installing Java and make sure R and Java have

Up, Any helps in this would be really appreciated. I stuck with this. Regards --- On Mon, 6/13/11, saleh [via R] <ml-node+3593743-1399725529-244676@n4.nabble.com> wrote: From: saleh [via R] <ml-node+3593743-1399725529-244676@n4.nabble.com> Subject: Calling R from Java To: "saleh" <s.alhammed@yahoo.com> Date: Monday, June 13, 2011, 12:35 PM Dear Sir/Madam, Sorry

Hi, I am trying to integrate my Java program with R using rJava package. I want to execute the whole Java program from R. The main() method in my Java code calls all the other defined methods. So, I guess I have to call the main() method in .jcall. An example Java code: *class A { public static int mySum(int x, int y) { return x+y; } public static void

Hello I m tryng to execute the code below and I have a problem with the R-Java connection.: import org.omegahat.R.Java.*; public class REvalSample { public static void main(String [] args) { String [] rargs = {"--slave", "--vanilla"}; System.out.println("Sample program to call R engine from Java"); ROmegahatInterpreter interp = new

Hi - I read through RServe page carefully and it turns out that it's not recommended to use RServe on windows. I have different applications that are calling R to do their own things at the same time. So architecture like R(D)COM or RServe is preferred where I can create a dedicated process for a single application. However, if I have to go with R(D)COM from Java, I'd have to find Java

Dear All I want to call the R program from one Java program because In my project R program parameters are set by one web page developed by java. Is this possible to call R program from java? many thanks in advance -- Wesley C Mathew [[alternative HTML version deleted]]

Hi all, I have been using 'source(filename)' to load R code from a file object. However, now I have a special case where I don't have a file since I am loading an R script from a Jar file. I would like to avoid creating temporary files. Is there a way to use the 'source' command with a Java String? Are there any other, better ways to do that? Ralf

Hey guys, I'm a (Java) integration architect. We are currently stuck with SAS but I'd be happy to switch that to R! (of course ;-). Now, a big argument for the latter, is that we can integrate it seamlessly with all our existing (java) apps. Therefore: has anyone heard of a java API (like SAS has it's Java API for enterprise integration) or a Service we can call (e.g. a web service,

Hi, > > I am a java programmer, an I want to use R from java. > could so help me > thanks for telling me whether I 'm using the good mailing list. > > thanks!! > > > -- Bilel [[alternative HTML version deleted]]

Not sure if this the right place, but I can't seem to subscribe to the rJava mailing list. Sorry for the noise. I have a jar file in the CLASSPATH variable. On running .jinit and checking .jclassPath, i can see the jar file containing the class. Yet when trying to instantaite the class, i get a class not found error. Now If if, create my own vm (see below), and then run .jinit (which will

Hi, Simon et al.: ????? My attempts to install rJava 0.9-12 from source failed under both macOS 10.15.4 and Windows 10. ????? Below please find what I got just now trying "update.packages()" and selecting "install from sources" on both computers followed by "sessionInfo()" in each case. ????? Thanks for your help. ????? Spencer Graves

I am not a Mac user, but I do use Linux and I would recommend not running R with sudo unless you are an admin ninja. That defensive practice would render the answer to your question moot. It is possible that your problem may have started with inappropriate use of sudo in configuring java, but configuring Java is not on-topic here. -- Sent from my phone. Please excuse my brevity. On March 27,

Hi! I?m on macOS 10.13.3 and just installed the new Java 10 using Homebrew Cask. I also have installed R with Homebrew. Everything seems to work fine, however I just get different outputs if I run sudo R CMD javareconf or R CMD javareconf. With sudo I get pointed to Java 9 and without sudo I get pointed to Java 10. I really don?t know why. Without sudo: $ R CMD javareconf

Hi all, I downloaded and installed JGR. Then when I tried to load the package in R console, it generated the following error message: > local({pkg <- select.list(sort(.packages(all.available = TRUE))) + if(nchar(pkg)) library(pkg, character.only=TRUE)}) Loading required package: rJava using Java Runtime version 1.5.0 using JAVA_HOME = C:\Program Files\Java\jre1.5.0_01 Loading required

Hello, All: ????? Is Java being deprecated for R? ????? I ask, because I've been unable to get rJava 0.9-11 to work under either macOS 10.15 or Windows 10, and I can't get rJava 0.9-12 to install -- and my Ecfun package uses it:?? I can't get "R CMD build Ecfun" to work on my Mac nor "R CMD check Ecfun_0.2-4" under Windows.? Travis CI builds

Hi Jeff!! I really don?t know if running R CMD javareconf with sudo has posed a problem here, now or in the past. What I know is sometimes it?s the only way to really config it, if I don?t run with sudo, in the end it asks me if I want to overwrite the configuration from root override rw-r--r-- root/admin for /usr/local/Cellar/r/3.4.4/lib/R/etc/Makeconf? (y/n [n]) y override rw-r--r--