Displaying 20 results from an estimated 500 matches similar to: "rJava question"
2006 Apr 28
5
Maildir + NFS + multiple machines = spectacular failure
I'm running beta7 on two machines, with maildir on NFS. I have lockd
running on all machines. I've found that Dovecot is highly unstable with
NFS when accessing a mailbox on more than one machine at the same time.
Both dovecot machines have:
mmap_disable = yes
lock_method = fcntl
NFS is version 3, exported from a third linux machine. All machines are
running 2.6.9 kernel.
Any ideas
2004 May 02
6
Simple SIP X-Lite Configuration Failing
I keep getting the following Auto-congesting message whenever I try to dial from an X-Lite SIP phone to another one within my LAN. It's a real basic configuration but I am unable to figure out what is happening:
localhost*CLI>
-- Executing Dial("SIP/jay-de1b", "SIP/jtest|20|tr") in new stack
-- Called jtest
May 2 11:47:58 NOTICE[1133742896]: chan_sip.c:1019
2012 Mar 22
3
calling java from R and using java time series double precision array
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
|
2012 Jul 19
1
Change log(J) to log(J+1) to stop log(0) from occurring in harModel
I think the code is part of the RTAQ package but is not included in it, as I
obtained it from
https://r-forge.r-project.org/scm/viewvc.php/pkg/RTAQ/R/HAR_model.R?view=markup&root=blotter&sortby=author&pathrev=1028.
It is not my code and I make no claim to other's good work, and apologize if
I should even be posting it I am not sure, but in the transform function it
allows to
2011 Apr 30
3
Copying to R a rectangular array from a Java class
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
2010 Mar 10
1
R CMD check issue with soft-linked directory
I've been having some strange problems with R CMD check in the last couple of days, but
now believe I have localized the issue.
I had been running Ubuntu Hardy on one drive and then upgraded to Jaunty, but put Jaunty
on a different drive. I continue to be able to boot Hardy when I wish. I soft-linked my R
working area i.e.,
/home/john/Rstuff ----> /media/lnx804/home/john/Rstuff
2008 Feb 19
1
rJava and matrices
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.
2012 Jul 19
1
Switching log(J) to log(J+1) to avoid log(0) in HAR-RVJ model
I am working with xts dependent data, and my code is as follows (the problem
is explained throughout):
dat <- getdat("prices")
dat <- read.zoo(dat, sep = "",format="%d/%m/%Y %H:%M",
tz="", FUN=NULL, regular=TRUE,
header=TRUE, index.column=1, colClasses=c("character",
"numeric"))
dat <- as.xts(dat)
2013 Jan 16
1
How to call Java main method using rJava package?
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
2006 May 02
1
Bug in yesterday's CVS..
Hi Timo.
I'm doing some testing with yesterday's CVS code and believe I've found a
bug.
In SquirrelMail, I get 5 messages in INBOX (doesn't matter how). I click
"Toggle All" then "Delete". All 5 messages move to Trash.
The Trash folder gets a link "expunge". I click that and get the
following error:
ERROR : Bad or malformed request.
Query:STORE
2016 Jul 26
3
Exportar datos en formato de Excel
Hola.
En mi caso, no he podido resolver los problemas con el Java para usar
XLConnect, que en los papeles me parece el mejor. Supongo que algo de la
arquitectura del sistema o bien de la relación entre el Java, el R y el
RStudio.
Así que utilizo
library(openxlsx)
write.xlsx(datos, file = "EDA1.xlsx") #donde datos es el objeto que quiero
guardar.
Requiere instalar el RTools, según tipo y
2015 Dec 15
2
How to efficiently share data (a dataframe) between R and Java
Dear all,
thank you for your hints. I would prefer to do not use Rserve as Dirk
mentioned.
@Simon
I have full control over the Java implementation - I can adapt the code
that I use for the communication R <-> Java.
> You can natively access structures on each side. The fastest way is to
> use R representation (column-oriented) in Java - that is much faster
> than any kind of
2012 Oct 15
2
Chopping a two column data frame by rows into a three dimensional array.
If I have a two column data frame like:
> dat <- cbind("x"=c(1:100),"y"=c(100:1))
How can I create an array that splits every ten rows of that data frame
into a third dimension of an array so that:
> newarray[,,1]
,,1
x y
1 100
2 99
3 98
... ...
10 91
,,2
x y
11 90
12 89
... ...
...
Thanks.
[[alternative HTML version deleted]]
2014 Dec 01
2
[LLVMdev] Optimization hints for "constant" loads
On 12/01/2014 11:14 AM, Andrew Trick wrote:
>
>> On Oct 21, 2014, at 4:03 PM, Philip Reames <listmail at philipreames.com
>> <mailto:listmail at philipreames.com>> wrote:
>>
>> Sanjoy made a good point. We don't actually need a new variant of
>> "invariant.start". Simply using an invariant.start with no uses
>> gives us a notion
2006 Apr 06
1
lib02_imap_quota_plugin.so: undefined symbol: quota
Hi folks.
We're trying to set up Dovecot with Maildir++ quotas. Operating system is
CentOS 4.3 (final) X86 using Dovecot 1.0b5.
After logging in, I get the following logged through syslog and the
connection closes:
Apr 6 10:39:36 dev3 dovecot: imap(jtest): Loading modules from directory:
/usr/local/lib/dovecot/imap
Apr 6 10:39:36 dev3 dovecot: imap(jtest):
2014 Dec 01
2
[LLVMdev] Optimization hints for "constant" loads
On 12/01/2014 02:42 PM, Andrew Trick wrote:
>
>> On Dec 1, 2014, at 2:21 PM, Philip Reames <listmail at philipreames.com
>> <mailto:listmail at philipreames.com>> wrote:
>>
>>
>> On 12/01/2014 11:14 AM, Andrew Trick wrote:
>>>
>>>> On Oct 21, 2014, at 4:03 PM, Philip Reames
>>>> <listmail at philipreames.com
2010 Feb 23
2
Importing a file to r
Hello
I am trying to import the attached file Curva LIBOR to R. I am trying to use
the following commands and obtaining the following errors
> res <- read.xlsx("C:\\Users\\FELIPE
PARRA\\Documents\\Quantil\\Federacion\\Curva LIBOR.xlsx", 4)
Error en .jcall(rowCells[[ic]], "I", "getColumnIndex") :
RcallMethod: invalid object parameter
> res <-
2012 Oct 04
1
Intermittent connectivity issues for JDBC / Oracle
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 =
2016 Jul 26
7
Exportar datos en formato de Excel
Buenos días a todos!
Estoy trabajando con una base de datos que directamente he descargado de
internet y después de prepararla un poco necesito exportarla a Excel he
intentando con las dos opciones que mencionaré al final pero ninguna
funciona, de qué otra manera puedo exportar esos datos a Excel... muchas
gracias por su ayuda y pronta respuesta!
1)
library(xlsx)
library(rJava)
2013 Sep 26
2
Read shortcuts of MS Excel files through R
Dear Rxperts,
Through Windows OS, I created shortcuts (paste as shortcut) to excel
spreadsheets ( with "xlsx" as the file extension). I wasn't able to read
the shortcuts through R and using "read" functions of "xlsx" package.
exf <- "a1.xlsx.lnk"
> read.xlsx(exf,1)
Error in .jcall("RJavaTools", "Ljava/lang/Object;",