similar to: rJava: System.exit(1) in Java causes R crash

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

Is there any way to store the value of warnings but avoid printing them? A simplified example: > out <- c(0.2,0.3,0.4) > var <- c(2,3,4) > outcome <- glm(out ~ var, family=binomial()) Warning message: non-integer #successes in a binomial glm! in: eval(expr, envir, enclos) I don't like the warning printed, but I would like to be able to check it's value after the

Hi, I'm new to calling C++/C programs from R and am having some trouble getting started. Following Sigal Blay (Simon Fraser University)'s instructions, I have a .c file called "useC1.c": /* useC1.c */ void useC(int *i) { i[0] = 11; } This produces a .o file : "useC1.o" in a specified directory. I then open R, set the proper directory and:

Need way to resize an existing graphics window. This should be applicable across platforms (as part of a package). Context: function1() draws main plot (I'm using grid), function2() adds smaller plot above main plot, but this one can sometimes overflow the original graphics window area. Thanks, Sigal

Hi list, I'm wanting to use a matrix as input to some java code, but I seem to be unable to do this (See code below). When searching online for a solution I found that rJava 0.5-2 (the version under development not yet in CRAN) is adding "direct support for raw vectors as method parameters". Is this related? I also tried to use .jarray / .jcast in various combinations to no avail.

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

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

I am desperate for help. I am trying to get the RJDBC and rJava .5to work on both my windows xp and linux Redhat EL5 Server. On both I get a ava.lang.ClassNotFoundException when calling JDBC(). My example is require(RJDBC) classPath='C:\\libraries\\mysql-connector-java-5.1.3-rc\\mysql-connector-java-5.1.3-rc-bin.jar' driverClass=c("com.mysql.jdbc.Driver") drv <-

Dear All, I'd like to use Weka functions that are not implemented (do not have interface) in RWeka, like the Remove function and others in the future! The .java() functionality is for that purpose but I haven't seen any example with Weka functions. Could anyone give me hand in how to do it? For instace if I want to use the weka.filters.unsupervised.attribute.Remove? 1. in the R console,

Dear R-helpers, I am developing a package named LDehatmap. It depends on the "genetics" package and includes two data files and a demo file. When I'm trying to install it, I get the following messages: * Installing *source* package 'LDheatmap' ... ** R ** data ** demo ** help >>> Building/Updating help pages for package 'LDheatmap' Formats: text html

I have been experiencing issues with an R script hanging when connecting to an Oracle database. To help debug, I found a function here in the nabble forum and made a small test script: #!/usr/bin/Rscript --no-restore --no-save --no-init-file library("RJDBC") drv<-JDBC("oracle.jdbc.OracleDriver","/home/oracle/lib/ojdbc6.jar", "'") dbCheck =

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 |

Hi All, I have written a Java MapReduce code that runs on Hadoop. My intention is to create an R package which will call the Java code and execute the job. Hence, I have written a similar R function. But when I call this function from R terminal, the Hadoop job is not running. Its just printing few lines of warning messages and does nothing further. Here is the execution scenario: *>

Dear all, I am facing a problem with running a script that i have written in R and i hope you can help me spot which exactly is the problem and how i can solve it. The error I get is the following: ---- Error in .jcheck(silent = FALSE) : Java Exception <no description because toString() failed>.jcall(row[[ir]], "Lorg/apache/poi/ss/usermodel/Cell;", "createCell",

Dear R helpers, MyPkg passes R CMD check on Linux machines. However, when I 'R CMD check myPkg' on Windows, the libs subdirectory is not being created. If I install the package and then create the libs subdirectory manually and copy the dll files to it, the package seems to work fine (but that's not good enough for submitting it to CRAN). Any advice will be appreciated, Thanks,

Dear R helpers, MyPkg passes R CMD check on Linux machines. However, when I 'R CMD check myPkg' on Windows, the libs subdirectory is not being created. If I install the package and then create the libs subdirectory manually and copy the dll files to it, the package seems to work fine (but that's not good enough for submitting it to CRAN). Any advice will be appreciated, Thanks,

Buenos días, Me gustaría compartir una duda con la que me acabo de encontrar y no se como solucionar, por si podrías echarme una mano: Trabajo con bases de datos en R que importo de excel. Cargando las librerías de: rJava , xlsxjars y xlsx. Al principio no parecía haber ningún inconveniente, pero después de un tiempo de trabajo me aparece el siguiente error en la consola de datos: *Error in

Hello there, I want to create a string from strings and numbers, here is my code: str <- "name" & toString(20) but it returns me this error: Error in toString(20) : could not find function ".jcall" what did I do wrong? I couldn't find this error anywhere... -- View this message in context: http://n4.nabble.com/Error-with-toString-tp1290327p1290327.html Sent from

Hi Does rJava offer a way to instruct the JVM to perform a garbage collection? Regards Ben

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