similar to: R and threading

Hi, I am interested in integrating R with a Java front end. Before deciding to use R I am concerned about multi-threading. I have been investigating R's capability of dealing with multiple requests simultaneously (multi-threading) and have looked at Luke Tierney's 2001 notes for ideas for future releases of R at http://www.stat.uiowa.edu/~luke/R/thrgui/thrgui.pdf Is a single instance

Is there a way to limit simultaneous calls. I like to limit simultaneous outgoing calls as more than few simulataneous calls are charged by my voip providers. However, I do not want to have any such restriction for internal calls. Thanks Jim

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"); ...

The Rserve documentation at http://rosuda.org/Rserve/doc.shtml#start states that even when making multiple connections to the Rserve, Windows won't separate workspaces physically and share environments, which will obviously cause problems and should therefore not be used. Are there any alternatives for the windows platform? Ralf

Let's say that I have a bunch of matrices. They look like this (pardon using fruit for examples, my actual data tables are far too enormous): Matrix1 Apples Oranges Pears A 5 6 7 B 5 3 4 C 8 9 10 D 11 13 14 E 15 3 8 F 1 4 5

Hi Lists, I have one box with two FXO and two FXS ports, it is running asterisk inside. I have one sinle POTS line connected to the one FXO and two phone sets connected to the FXS port. Extension 6003 is asigned to one fxs and 6004 is asigned to another fxs, the two extensions can call each other, they can both make/receive PSTN call, but they can't make PSTN call simultaneously. Is it

I realize the communication between R and Java with Rserve in my dissertation, but i can not run the Rserve by double click of Rserve.exe, and also i can't realize backstage running of Rserve by technique of Multi-thread in Java. Can anyone tell me why? So, before i run the Java, i must run the R manually, then input "Rserve()" or "system("Rserve")". This

Hi, Is there a routine available in R for the Newton-Raphson method for simulataneous equations in several unknowns? Thanks Robert -- Robert J. Chandran Department of Botany 3506 Miller Plant Sciences Building University of Georgia Athens, GA 30602 Phone: (706)-583-0943 -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- r-help mailing list -- Read

This is a very simple question, so I apologize I couldn't find it online: I want to shorten the string 'apples.pears' to 'apples'. string='apples.pears' string1=substr(string,0,x) For x above, I would like to have a command like charAt(string,"."), i.e. the position of the period in the word, but I can't seem to find a charAt command in R. Thank you.

Hi all, is there a way to properly terminate Rserve instead of killing the process? I run Rserve in a linux box that serves my Java client.. I have a cronjob that runs Rserve every morning. However, I'm killing it at night manually for the moment. Is there a way, given host/port, I can run an R command to properly terminate it?? Thanks a lot in advance!! - yoooooooo -- View this message in

Hello, I'm currently working with the C++ version of the Rserve Client as part of a student project. Is there an implementation of a non-blocking interface to Rserve in C++? I can find one via the Java JRI but no equivalent in C++. Thanks _________________________________________________________________ Do you have a story that started on Hotmail? Tell us now [[alternative HTML

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 =

Hello, I have some code which generates lattice objects. The function recieves serialized forms of the lattice objects which it then unserializes and then adds to an ArrayList<REXP>. REXPRaw rser = new REXPRaw( target ); //target contains the raw serialized forms of lattice objects rconn.assign("temp",rser); REXP ret =

Hey guys, I got a java gui app which loads up data into a table. How can i use R to perform statistical functions on the data in the table? P.S My question is not particularly geared towards Java coding, but more towards allowing R functionality within Java.

Hi all, I'm trying to find something like the "==" operator that will work on vectors or something equivalent to SQL's "IN" function. For e.g., if I have: x <- c(1,2,3,4,5) y <- c("apples", "oranges", "grapes", "bananas", "pears") z <- data.frame (x,y) w <- c(2,4,5) I want R to return the values

I need to input a txt, or xls, file from a client to R, using RServe. >From what I've been reading, the best way to do this, is using the 'createReference' method, from REngine package. But I couldn't find any documents exemplifying it's use. I got to upload a file from java? And then? How do i refeer the file to this method? Best Regards, J. Daniel -- View this message

Good Morning, I recently compiled Samba 2.2.7a as a 64bit executable on Solaris 8. The Solaris 8 server is configured to permit 65535 files to be open, while Samba has been configured to allow 65500 files to be open. These large number of files are required to permit simulataneous compilations to take place a single build server, though there are multiple build servers. Last time I tried to

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

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, 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