similar to: Handshake exception in Rserve [Broadcast]

Hello, We are facing some problem while calling a Rserve API from our Java client. The details are as below: 1) We have installed Rserve on linux machine "Nagarajan"(Port: 6311) and related modules. 2) We have started the Rserve in daemon mode perfectly by executing the comman " R CMD Rserve" on the linux machine. But when the Java client executes the statement:

Hi all, first of all: Sorry for my bad englis, and now the Question: I have some problems with running R from Java. First i tried using rJava (JRI). But the examples didnt work properly. Now im trying to establish a connection by using Rserve and JRclient (RF503). I have the following code, which i`ve found: ------------------------------------------------------------------------ public

Hi I get this error with Rserve: eval failedeval failed, request status: R parser: syntax erroreval failed, request status: R parser: input incompleteorg.rosuda.REngine.Rserve.RserveException: eval failed at org.rosuda.REngine.Rserve.RConnection.eval(RConnection.java:233) at se.ucr.qrep.RGenerator.generateReport(RGenerator.java:45) Anyone know what it could mean? -- View this message in

Dear all, I'm trying to use R-functions from Java. I want to use the Package Rserve. Everthing is installed and I can run my Java-testprogramm. ... Rconnection r = new Rconnection(); double[] d = r.eval("rnorm(10)").asDoubleArray(); ... But now I get always arrays with ten "0.0", which is not correct I suppose, that is is a problem from R, because at the fist time (last

Hi. I nearly have Rserve working.... I have the dialog box which says.. Rserve: Ok, read to answer queries. Having read all i can find, I followed the guidance given on http://rosuda.org/Rserve/example.shtml I tried to follow the first example but I am getting an error descirbed below. My IDE looks like this: http://www.nabble.com/file/p10705244/ide.jpg However, when I try and compile my

Hi, I want to run the R-function ctree (package party) from Java over Rserve with the following Java-Code: try{ RConnection v = new RConnection(); v.voidEval("library(party)"); v.voidEval("try(load(\"C:\\Documents and Settings\\daten2.rda\"))"); v.voidEval("try(pdf(\"C:\\Documents and Settings\\test4.pdf\"))"); v.voidEval("plot

Hi all, We're using Rserve and RandomForest to do classification from within a Java program. The total is about 4 lines of R code: library('randomForest') x y future fit<-randomForest(x,y,no.action=na.roughfix,importance=T,proximity=T) p<-predict(fit, future) What is very frustrating is that we have tried this two different ways (both work in R): 1. Load x, y, and future

Hello, I've installed an Rserve instance on a remote server. I have no problem interfacing with it and running most commands. I have loaded some R scripts on the remote server, and one of them contains a system command to copy a file (created by the script) onto another server. When I run the script on the remote server itself, the script works as I intend: it creates a .csv file and uses

Hi, I am facing one problem of fetching R warning messages in Java Code using Rserve. It is easier to trap R Error messages by using catching RSrvException. I came to know one way of fetching R Warning messages, i.e. using "withCallingHandlers", below is my Java Program, which uses withCallingHandlers of R : import org.rosuda.JRclient.*;

REXP has an asBytes() method. Will this capture the output of an R plot function if a proper graphics device is used? It appears R insists on sending plot output to a file. Kind of strange since it insists on loading all your data into memory before it can do anything. If so then does anyone know what this would be? I prefer png or jpeg. Example: c is an RConnection REXP r =

Does it work if you supply the closing parenthesis on the call to boxM? The parser says the input is incomplete and a missing closing parenthesis would cause that error.. // create a string command with that variable name.String boxVariable = "boxM(boxMVariable [,-5], boxMVariable[,5]"; // try to execute the command... // FAILS with org.rosuda.REngine.Rserve.RserveException: eval

Hello everyone, I have been attempting to make use of the newly implemented detachedEval functionality and I am having a few teething issues. My code works fine when tested with both the Client and the Server on a single machine, but issues arise when I run them separately.Possibly because the local / local connection is running voer a Unix socket rather than tcp proper? Rsession*

I suspect that you are looking for something like: read.csv(textConnection( "5.1,3.5,1.4,0.2,setosa 4.9,3,1.4,0.2,setosa 4.7,3.2,1.3,0.2,setosa 4.6,3.1,1.5,0.2,setosa 5,3.6,1.4,0.2,setosa" ), header = FALSE) HTH, Jan On 25-10-17 12:50, Morkus via R-devel wrote: > Hi all, > > Using RConsole, it's easy to get data from the database that you can use in an R Command. Like

You are entering the quoting hell - you are missing quotes and escapes for \n. it would be much more reasonable to use the rConnection.assign method instead of pasting any content through the parser. Cheers, Simon > On Oct 26, 2017, at 9:59 AM, Morkus via R-devel <r-devel at r-project.org> wrote: > > That's amazing! Thank you!!! > > One follow up question, if

Hi all, Using RConsole, it's easy to get data from the database that you can use in an R Command. Like this: (Reference case) irisQuery <- dbGetQuery(conn, "select * from iris") boxM(irisQuery [,-5], irisQuery[,5]) ---- (Actual case this posting is about) Yet, if I'm getting that same (sample IRIS) data, say, in a web service possibly POSTED from a SQL command, that same

Dear colleagues: I'm very interested in Rserve because I'm trying to model (time series) remotely using a terminal (Windows XP) over a database in a server (Windows Vista) by internet. My first question: Is Rserve the solution to work remotely with R (for time series analysis) with databases? If this is the solution I have the next problem: The client application of Rserve works over

Thanks! I just figured it out (thanks to "Beyond Compare") and was coming here to post back. The boxM test doesn't work with that (now, finally working) REXP structure, but I probably now need to create a table or something and parse that structure. So much fun! :) Thanks again. - M Sent from [ProtonMail](https://protonmail.com), Swiss-based encrypted email. > --------

On 28/10/2017 7:12 AM, Morkus wrote: > Thanks Duncan. Awesome ideas! > > I think we're getting closer! > > I tried what you suggested and got a possibly better error... > . > . > . > rConnection.assign("boxMVariable", myDf); > > *String resultBV *= *"str(boxMVariable)"*; *// your suggestion.* > > *RESULTING ERROR:* > >

hi: when I run the example program on windows XP+NetBeans: Rserve_0.6-3\Rserve\src\client\javanew\Rserve\test\test.java { // test control commands (works only when enabled and in Rserve 0.6-0 and higher only) - must be the last test since it closes the connection and shuts down the server System.out.println("* Test control commands (this will fail if control commands are disabled)

Hello, I want to import R-output via Rserve to Java, especially for the function ctree from the package party. Rserve is working properly. Yet, I only get the predictions with the Java code try{ RConnection c = new RConnection(); ... c.voidEval("modell <- ctree(...)"); REXP y = c.eval("nodes(modell,1)[[1]]$prediction"); ...