similar to: Problems accessing Rconnect

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 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.*;

Hi, I'm wondering if anyone can help me. I'm writing java application that using JRclient and Rserve to communicate with R. I want to get response from R for command: x <- rbind(matrix(rnorm(100, sd = 0.3), ncol = 2),matrix(rnorm(100, mean = 1, sd = 0.3), ncol = 2)) kmeans(x, 2, 22, algorithm = "Hartigan-Wong") and put result of kmeans() function in my TextArea.I've

Dear All, I've installed Rserve and I've met in the bin directory of R and I've runn it and it appears //ready to answer the querie// and i've installed the Jrclient and I've put it on the desktop in the directory Jrclient and i've installed JDK and sur I'have the R language. Now when I compile the Jrclient exeamples : I've opened the concole commande and I

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

Hi there, I am using JRClient to build logistic regression model in the following manner : Rconnection c = new Rconnection(); c.eval("KSN<-read.table(\"/Users/amine/Documents/Research/ Tools/R/D2R1.txt\",header=T,sep=\",\")"); c.eval("result <- glm(Nausea ~ Kaletra*Sustiva, family = binomial(link = logit), data =KSN)");

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

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:* > >

We had something similar, and as far as I recall the problem turned out to be that we had not set the config file to allow remote connections. This would probably be better put on the Rosuda mailing list: http://mailman.rz.uni-augsburg.de/mailman/listinfo/stats-rosuda-devel Hope this helps, Matt Wiener -----Original Message----- From: r-help-bounces at stat.math.ethz.ch [mailto:r-help-bounces

Hello, I've installed Rserve and I've run it. I've installed the JRclient-RF503.jar. I've installed JDK 1.4.2 and R language version 2.7.1. Now when I compile the Jrclient exeamples from JBUILDER 9? an error appreas: package org.rosuda.JRclient does not exist ... could you please help me? Thank you in advance [[alternative HTML version deleted]]

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

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

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 8:59 AM, Morkus wrote: > Hey Duncan, > > Hard to debug? That's an understatement. Eyes bleeding.... > > In any case, I tried all your suggestions. To get "integer" for the > final column, I had to change the code to get integers instead of strings. The last column in iris is actually a factor. That's stored as an S3-classed integer vector

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

On 29/10/2017 7:26 AM, Morkus wrote: > Thanks Duncan. I can't tell you how helpful all your terrific replies > have been. > > I think the biggest surprise is that nobody appears to be using Java and > R together like I"m trying to do. I suppose it should be a surprise > since there are no books on the subject and almost no technical > documentation other than a

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: Error in format.default(nam.ob, width = max(ncn), justify = "left") : invalid 'width' argument (No idea

That's amazing! Thank you!!! One follow up question, if that's OK? If, instead of using hard-coded CSV, I read the CSV into a variable first, then it fails again with a parse error. Code below. So, if I read the CSV into a variable, do I need an additional wrapper method? Seems like it should still work. Thanks in advance for your reply. -M String inputIris =

Just print the string you are asking to R to evaluate. It doesn't make any sense as an R expression. Fix that, and things will work. Duncan Murdoch On 27/10/2017 3:41 PM, Morkus via R-devel wrote: > It can't be this hard, right? I really need a shove in the right direction here. Been spinning wheels for three days. Cannot get past the errors. > > I'm doing something

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"); ...